In this task, you will be given sentences in which your task is to recognize the name of the organ of the body. An organ is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Although there might be several correct answers, you need to write one of them.

 Our growing understanding of the role that unfavorable patterns of gene expression play in the etiology of neurodegenerative disease emphasizes the need for strategies to selectively block the biosynthesis of harmful proteins in the brain .
brain

 From the standpoint of the etiopathogenic mechanisms the angiocholitis was determined by biliary lithiasis in 59 cases , by sclerosis of the Oddi sphincter in 5 cases , by postoperative cicatriceal stenosis of the main biliary pathway in 2 cases , by hepatic hydatitosis in 16 cases , by Vater ampuloma in 10 cases by cancers of the main biliary pathway in 40 cases and by the congenital cyst of the choledocus in one case .
hepatic

 After one month ' s treatment there was striking radiological improvement apart from the persistence of the oesophageal stricture .
oesophageal