TASK DEFINITION: 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.
PROBLEM:  The vaccine was highly immunogenic , since 111 of 113 patients ( 98 % ) produced anti - HBs ( 10 mIU / ml or more ) .

SOLUTION: anti - HBs

PROBLEM:  No patient demonstrated a decrease in bone marrow fibrosis as determined by serial procollagen ( PC III ) serum level analysis .

SOLUTION: PC III

PROBLEM:  Thus the Hi - RARE represents a new type of RA response element with a role in the modulation of the expression of MHC class 1 family genes .

SOLUTION:
MHC class 1