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.
Example: I have serious allergy in my left eye.
Example solution: eye
Example explanation: Eye is an organ which has been affected, hence should be tagged.

Problem:  The effect of GSH synthesis on brain GSH turnover rates for 2 - and 8 - mo - old mice were determined after intracerebroventricular ( icv ) injection of [ 35S ] cysteine .

Solution: brain