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.

Q:  Thus , unlike Old World primates , cortisol in New World primates has only weak sodium - retaining potency because the aldosterone receptor has a low affinity for cortisol .

A: aldosterone receptor
****
Q:  In addition , caspase - 3 , an executioner of apoptosis , was activated and its substrate , poly ( ADP - ribose ) polymerase ( PARP ) , was cleaved during 2 , 2 ' , 4 , 6 , 6 ' - PeCB - induced apoptosis .

A: caspase - 3
****
Q:  Forty - seven of 50 patients with leukemic cells containing more than 6 , 000 receptor sites and 22 of 36 patients with cells containing less than 6 , 000 receptor sites achieved remission .

A:
receptor sites
****