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.

Example Input:  Such effect was accompanied by an increased expression of MCP - 1 mRNA ( 176 % as compared to the control ) in endothelial cells which resulted in enhanced monocyte chemotaxis .
Example Output: MCP - 1

Example Input:  The mechanism responsible for the delayed nuclear accumulation of phosphorylated STAT3 was examined in detail , focusing on the role of B cell - derived lymphokines .
Example Output: phosphorylated STAT3

Example Input:  EBV utilizes CD21 / CR2 as its receptor on B cells to initiate the infection process .
Example Output:
CD21 / CR2