In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Input: Consider Input:  These cells also showed an increase in cyclin A and cyclin A - and E - associated kinase activities characteristic of S phase induction .

Output: cyclin A


Input: Consider Input:  The clr1 locus regulates the expression of the cryptic mating - type loci of fission yeast .

Output: clr1 locus


Input: Consider Input:  Here , we characterize TCR / CD48 and TCR / CD28 costimulation in T cells expressing Lck Src homology 3 ( SH3 ) mutants .


Output: Src homology 3