instruction:
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.
question:
 The non - major histocompatibility complex ( MHC ) - encoded CD1 family has recently emerged as a new antigen - presenting system that is distinct from either MHC class I or class II molecules .
answer:
CD1 family


question:
 In F9 , which is a prototype of embryonal carcinoma cells expressing hst , the expression of hst gene is positively regulated by a downstream octamer motif that functions as an enhancer .
answer:
hst gene


question:
 INTERVENTIONS : Postoperative follow - up consisted of serial determination of different biochemical markers ( CK , CK - MB , cTnI ) , ECGs , and echocardiography .
answer:

CK - MB