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:  Human normal peripheral blood B - lymphocytes are deficient in DNA - dependent protein kinase activity due to the expression of a variant form of the Ku86 protein .
Example Output: Ku86 protein

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:  E - selectin expression induced by B . fragilis outer membranes was not blocked by polymixin B .
Example Output:
E - selectin