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.

 Twelve patients were observed for periods of sufficient length for the drug effect to be assessed , and in 11 there was a good response in terms of decrease in spleen size . Cycloguanil pamoate may be of value both for prophylaxis and treatment in areas where tropical splenomegaly syndrome is endemic .
spleen