diff --git a/package.json b/package.json
index 73665d0..b2084af 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@veupathdb/coreui",
-  "version": "0.18.13",
+  "version": "0.18.14",
   "author": "Michael Dunn <mdunn4@nd.edu>",
   "description": "Core components and style definitions for VEuPath applications.",
   "private": false,
diff --git a/src/components/inputs/SearchBox/SearchBox.tsx b/src/components/inputs/SearchBox/SearchBox.tsx
index 5c6dcec..d1cc27b 100644
--- a/src/components/inputs/SearchBox/SearchBox.tsx
+++ b/src/components/inputs/SearchBox/SearchBox.tsx
@@ -4,7 +4,18 @@ import { merge } from 'lodash';
 import { safeHtml } from '../SelectTree/Utils';
 import { Close, Filter } from '../../icons';
 import { Help, Search } from '@material-ui/icons';
-import { Tooltip } from '@material-ui/core';
+import { Theme, Tooltip, withStyles } from '@material-ui/core';
+
+const StyledTooltip = withStyles((theme: Theme) => ({
+  tooltip: {
+    backgroundColor: '#fffde7',
+    color: 'rgba(0, 0, 0, 0.87)',
+    maxWidth: 320,
+    fontSize: theme.typography.pxToRem(12),
+    border: '1px solid #dadde9',
+    boxShadow: theme.shadows[1],
+  },
+}))(Tooltip);
 
 type Props = {
 
@@ -21,7 +32,10 @@ type Props = {
   placeholderText?: string;
 
   /** Icon name to show in input box. Defaults to "search". */
-  iconName?: string;
+  iconName?: 'search' | 'filter';
+
+  /** Specifies where icon should be placed within input box. Defaults to "right". */
+  iconPosition?: 'left' | 'right';
 
   /** Text to appear as tooltip of help icon, should describe how the search is performed. Defaults to empty (no icon) */
   helpText?: string;
@@ -50,7 +64,7 @@ const searchIconStyleSpec = {
 const filterIconStyleSpec = {
   fill: '#999999',
   position: 'relative',
-  left: '5px',
+  top: '2px',
   fontSize: '1.5em',
 }
 
@@ -60,6 +74,7 @@ const defaultStyleSpec: SearchBoxStyleSpec = {
     height: '0.7em',
     color: '#17b',
     marginLeft: '0.25em',
+    cursor: 'pointer',
   },
   optionalIcon: {},
   clearSearchIcon: {
@@ -79,15 +94,16 @@ const defaultStyleSpec: SearchBoxStyleSpec = {
   input: {
     border: '1px solid #888',
     borderRadius: '16px',
-    padding: '0.2em 1.5em 0.2em 1em',
-    width: 'calc(100% - 2.5em)',
+    width: 'calc(100% - 3em)',
+    textOverflow: 'ellipsis',
+    background: '#fff',
   },
   container: {
     display: 'flex',
     alignItems: 'center',
     whiteSpace: 'nowrap',
     width: '100%',
-    margin: '0 0.5em 0 2em',
+    margin: '0 0.5em',
   }
 }
 
@@ -103,16 +119,23 @@ export default function SearchBox({
   placeholderText = '',
   helpText = '',
   iconName = 'search',
+  iconPosition = 'right',
   styleOverrides = {},
 }: Props) {
 
   const styleSpec: SearchBoxStyleSpec = useMemo(() => {
-    const defaultStyleWithIcon = {
+    const defaultStyleWithIconSpecs = {
       ...defaultStyleSpec,
-      optionalIcon: iconName === 'search' ? {...searchIconStyleSpec} : {...filterIconStyleSpec}
+      input: {
+        ...defaultStyleSpec.input,
+        padding: iconPosition === 'right' ? '0.2em 2em 0.2em 1em' : '0.2em 1em 0.2em 2em',
+      },
+      optionalIcon: 
+        iconName === 'search' ? {...searchIconStyleSpec} : 
+          iconPosition === 'right' ? {...filterIconStyleSpec, right: '25px'} : {...filterIconStyleSpec, left: '5px'}
     }
-    return merge({}, defaultStyleWithIcon, styleOverrides)
-  }, [styleOverrides])
+    return merge({}, defaultStyleWithIconSpecs, styleOverrides)
+  }, [styleOverrides, iconName, iconPosition])
 
   function handleSearchTermChange(e: React.ChangeEvent<HTMLInputElement>) {
     let searchTerm = e.currentTarget.value;
@@ -130,10 +153,13 @@ export default function SearchBox({
     onSearchTermChange!('');
   }
 
-  const optionalIcon = iconName === 'filter' ? (
-    <Filter style={styleSpec.optionalIcon} />
-  ) : (
+  /** 
+   * At this point we only use two different icons in search bars: 'filter' and 'search'
+  */
+  const optionalIcon = iconName === 'search' ? (
     <Search style={styleSpec.optionalIcon} />
+  ) : (
+    <Filter style={styleSpec.optionalIcon} />
   );
 
   return (
@@ -143,7 +169,7 @@ export default function SearchBox({
       <label css={{
         flexGrow: 1,
       }}>
-        {iconName === 'filter' && !searchTerm ?
+        {iconPosition === 'left' && !searchTerm ?
           <span style={{
             position: 'absolute',
             height: 0,
@@ -174,7 +200,7 @@ export default function SearchBox({
           >
             <Close style={styleSpec.clearSearchIcon} />
           </button> :
-          iconName === 'search' ?
+          iconPosition === 'right' ?
           <span style={{
             position: 'absolute',
             height: 0,
@@ -188,11 +214,12 @@ export default function SearchBox({
       {/* use safeHtml for helpText to allow italic */}
       {!helpText ? 
         null : 
-        <Tooltip
+        <StyledTooltip
           title={safeHtml(helpText)}
+          interactive
         >
           <Help style={styleSpec.helpIcon}/>  
-        </Tooltip>}
+        </StyledTooltip>}
     </div>
   );
 }
diff --git a/src/components/inputs/SelectTree/SelectTree.tsx b/src/components/inputs/SelectTree/SelectTree.tsx
index b0cefdb..52f79e7 100644
--- a/src/components/inputs/SelectTree/SelectTree.tsx
+++ b/src/components/inputs/SelectTree/SelectTree.tsx
@@ -59,6 +59,7 @@ function SelectTree<T>(props: SelectTreeProps<T>) {
             additionalFilters={props.additionalFilters}
             isAdditionalFilterApplied={props.isAdditionalFilterApplied}
             wrapTreeSection={props.wrapTreeSection}
+            styleOverrides={props.styleOverrides}
         />
     )
 
diff --git a/src/components/inputs/SelectTree/Utils.tsx b/src/components/inputs/SelectTree/Utils.tsx
index e613dd4..0dc9e4b 100644
--- a/src/components/inputs/SelectTree/Utils.tsx
+++ b/src/components/inputs/SelectTree/Utils.tsx
@@ -344,6 +344,9 @@ export function safeHtml<P>(str: string, props?: P, Component?: React.ComponentC
 export function safeHtml<P>(str: string, props?: P, Component?: React.StatelessComponent<P>): JSX.Element;
 export function safeHtml<P>(str: string, props?: P, Component?: string): JSX.Element;
 export function safeHtml<P>(str = '', props?: P, Component: any = 'span'): JSX.Element {
+  if (str.indexOf('<') === -1) {
+    return <Component {...props}>{str}</Component>
+  }
   // Use innerHTML to auto close tags
   let container = document.createElement('div');
   container.innerHTML = str;
diff --git a/src/components/inputs/checkboxes/CheckboxTree/CheckboxTree.tsx b/src/components/inputs/checkboxes/CheckboxTree/CheckboxTree.tsx
index 60f4519..daba46d 100644
--- a/src/components/inputs/checkboxes/CheckboxTree/CheckboxTree.tsx
+++ b/src/components/inputs/checkboxes/CheckboxTree/CheckboxTree.tsx
@@ -31,8 +31,10 @@ const defaultTreeLinksStyleSpec: TreeLinksStyleSpec = {
     container: {
       display: 'flex',
       justifyContent: 'center',
-      height: '2em',
+      height: 'auto',
+      flexWrap: 'wrap',
       padding: '0.5em 0',
+      rowGap: '0.5em',
     },
     links: {
       fontSize: '0.9em',
@@ -43,7 +45,9 @@ const defaultTreeLinksStyleSpec: TreeLinksStyleSpec = {
       padding: 0,
       margin: 0,
     },
-    actionsContainerStyle: {}
+    actionsContainerStyle: {
+      flexGrow: 1,
+    }
 };
 
 const linksHoverDecoration = css({
@@ -54,7 +58,11 @@ const linksHoverDecoration = css({
 
 export type CheckboxTreeStyleSpec = {
   treeLinks?: TreeLinksStyleSpec;
+  searchAndFilterWrapper?: React.CSSProperties;
   searchBox?: SearchBoxStyleSpec;
+  additionalFilters?: {
+    container?: React.CSSProperties;
+  };
   treeNode?: CheckboxTreeNodeStyleSpec;
   treeSection?: {
     container?: React.CSSProperties;
@@ -64,19 +72,30 @@ export type CheckboxTreeStyleSpec = {
 
 const defaultCheckboxTreeStyleSpec: CheckboxTreeStyleSpec = {
   treeLinks: defaultTreeLinksStyleSpec,
-  treeNode: {},
+  searchAndFilterWrapper: {
+    display: 'flex',
+    justifyContent: 'center',
+  },
   searchBox: {},
+  additionalFilters: {
+    container: {
+      display: 'flex',
+      alignItems: 'center',
+    },
+  },
   treeSection: {
     container: {
       flexGrow: 2, 
-      overflowY: 'auto'
+      overflowY: 'auto',
+      margin: '0.5em 0', 
     },
     ul: {
-      width: '100%', 
-      margin: '0.5em 0', 
+      width: '100%',
+      margin: 0,
       padding: '0 1em', 
     }
-  }
+  },
+  treeNode: {},
 }
 
 type StatefulNode<T> = T & {
@@ -166,7 +185,10 @@ export type CheckboxTreeProps<T> = {
   searchBoxPlaceholder: string;
 
   /** Name of icon to show in search box */
-  searchIconName?: string;
+  searchIconName?: 'search' | 'filter';
+
+  /** Position of icon in search box */
+  searchIconPosition?: 'left' | 'right';
 
   /** Search box help text: if present, a help icon will appear; mouseover the icon and a tooltip will appear with this text */
   searchBoxHelp?: string;
@@ -332,17 +354,18 @@ function getInitialNodeState<T>(node: T, getNodeChildren: (t: T) => T[]) {
 
 interface AdditionalFiltersProps {
   filters?: React.ReactNode[];
+  filtersStyleSpec?: React.CSSProperties;
 }
 
 /**
  * Renders additional filters to supplement the default searchbox
  */
-function AdditionalFilters({ filters }: AdditionalFiltersProps) {
+function AdditionalFilters({ filters, filtersStyleSpec }: AdditionalFiltersProps) {
   return (
     <>
       {
         filters != null && filters.length > 0 &&
-        <div>
+        <div css={{...filtersStyleSpec}}>
           {
             filters.map((filter, index) => (
               <span key={index}>
@@ -600,6 +623,7 @@ function CheckboxTree<T> (props: CheckboxTreeProps<T>) {
         onSearchTermChange,
         searchBoxPlaceholder,
         searchIconName,
+        searchIconPosition,
         searchBoxHelp,
         additionalFilters,
         wrapTreeSection,
@@ -622,7 +646,7 @@ function CheckboxTree<T> (props: CheckboxTreeProps<T>) {
             isLeafVisible,
             generated: generatedTreeState,
         }
-    }, [tree, isSearchable, searchTerm, searchPredicate, isAdditionalFilterApplied, name, getNodeId, getNodeChildren, props.renderNode, expandedList]);
+    }, [tree, isSearchable, searchTerm, searchPredicate, isAdditionalFilterApplied, name, getNodeId, getNodeChildren, props.renderNode, expandedList, selectedList]);
 
 
     /**
@@ -838,21 +862,20 @@ function CheckboxTree<T> (props: CheckboxTreeProps<T>) {
       <>
         {linksPosition && linksPosition == LinksPosition.Top ? treeLinks : null}
         {!isSearchable || !showSearchBox ? "" : (
-          <div css={{
-            display: 'flex',
-            justifyContent: 'center',
-          }}>
+          <div css={{...styleSpec.searchAndFilterWrapper}}>
             <SearchBox
               autoFocus={autoFocusSearchBox}
               searchTerm={searchTerm}
               onSearchTermChange={onSearchTermChange}
               placeholderText={searchBoxPlaceholder}
               iconName={searchIconName}
+              iconPosition={searchIconPosition}
               helpText={searchBoxHelp}
               styleOverrides={styleSpec.searchBox}
             />
             <AdditionalFilters
               filters={additionalFilters}
+              filtersStyleSpec={styleSpec.additionalFilters?.container}
             />
           </div>
         )}
diff --git a/src/components/inputs/checkboxes/CheckboxTree/CheckboxTreeNode.tsx b/src/components/inputs/checkboxes/CheckboxTree/CheckboxTreeNode.tsx
index f285b45..bd089a0 100644
--- a/src/components/inputs/checkboxes/CheckboxTree/CheckboxTreeNode.tsx
+++ b/src/components/inputs/checkboxes/CheckboxTree/CheckboxTreeNode.tsx
@@ -2,21 +2,21 @@ import React, { useMemo } from 'react';
 import { merge } from 'lodash';
 import { isLeaf } from '../../SelectTree/Utils';
 import IndeterminateCheckbox, { IndeterminateCheckboxProps } from '../IndeterminateCheckbox';
-import { ArrowRight, ArrowDropDown } from '@material-ui/icons';
-import { CSSProperties } from '@emotion/serialize';
+import { ArrowRight, ArrowDown } from '../../../icons';
 
 export type CheckboxTreeNodeStyleSpec = {
   list?: {
-    listStyle: CSSProperties['listStyle'],
+    listStyle: React.CSSProperties['listStyle'],
   },
   children?: {
-    padding: CSSProperties['padding']
-    margin: CSSProperties['margin']
+    padding: React.CSSProperties['padding']
+    margin: React.CSSProperties['margin']
   },
-  topLevelNode?: React.CSSProperties;
+  nodeWrapper?: React.CSSProperties;
+  topLevelNodeWrapper?: React.CSSProperties;
   leafNodeLabel?: React.CSSProperties;
   nodeLabel?: React.CSSProperties;
-  checkboxLabel?: React.CSSProperties;
+  labelTextWrapper?: React.CSSProperties;
 };
 
 const defaultStyleSpec: CheckboxTreeNodeStyleSpec = {
@@ -27,20 +27,26 @@ const defaultStyleSpec: CheckboxTreeNodeStyleSpec = {
     padding: '0 0 0 1.5em',
     margin: 0,
   },
-  topLevelNode: {},
+  nodeWrapper: {
+    display: 'flex',
+    alignItems: 'center',
+    padding: '1px 0',
+  },
+  topLevelNodeWrapper: {},
   leafNodeLabel: {
     display: 'flex',
     width: '100%',
-    marginLeft: '1em',
+    marginLeft: '1.25em',
   },
   nodeLabel: {
     display: 'flex',
     width: '100%',
-    marginLeft: 0,
+    marginLeft: '0.5em',
   },
-  checkboxLabel: {
+  labelTextWrapper: {
     width: '100%', 
-    margin: 'auto 0'
+    margin: 'auto 0',
+    paddingLeft: '0.25em',
   }
 }
 
@@ -154,15 +160,17 @@ export default function CheckboxTreeNode<T>({
       }}>
         <div 
           css={
-            isTopLevelNode ? { display: 'flex', ...styleSpec.topLevelNode} : {display: 'flex'}
+            isTopLevelNode ? { ...styleSpec.nodeWrapper, ...styleSpec.topLevelNodeWrapper} : {...styleSpec.nodeWrapper}
           }
         >
-          {isLeafNode || isActiveSearch ? (
-            null
+          {isLeafNode ? null 
+            : isActiveSearch ? (
+              // this retains the space of the expansion toggle icons for easier formatting
+              <div style={{width: '0.75em'}}></div>
           ) : (
             isExpanded ? 
-              <ArrowDropDown 
-                style={{color: '#aaa', lineHeight: '1em'}} 
+              <ArrowDown 
+                style={{fill: '#aaa', fontSize: '0.75em', cursor: 'pointer'}} 
                 tabIndex={0} 
                 onClick={(e) => {
                   e.stopPropagation();
@@ -171,7 +179,7 @@ export default function CheckboxTreeNode<T>({
                 onKeyDown={(e) => e.key === 'Enter' ? toggleExpansion(node) : null} 
               /> :
               <ArrowRight 
-                style={{color: '#aaa', lineHeight: '1em'}}
+                style={{fill: '#aaa', fontSize: '0.75em', cursor: 'pointer'}}
                 tabIndex={0} 
                 onClick={(e) => {
                   e.stopPropagation();
@@ -182,7 +190,7 @@ export default function CheckboxTreeNode<T>({
           )}
           {!isSelectable || (!isMultiPick && !isLeafNode) ? (
             <div
-              css={{width: '100%', margin: 'auto 0'}}
+              css={{...styleSpec.labelTextWrapper}}
               onClick={shouldExpandOnClick ? () => toggleExpansion(node) : undefined}
               >
               {nodeElement}
@@ -199,7 +207,7 @@ export default function CheckboxTreeNode<T>({
                     />
               } 
               <div
-                css={{...styleSpec.checkboxLabel}}
+                css={{...styleSpec.labelTextWrapper}}
               >
                 {nodeElement}
               </div>