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.

Input: Consider Input: In K562 cells , using the bicistronic vector , selection with colchicine led to at least 20 - fold higher expression of the MDR1 gene product than did selection with G418 , suggesting that the stringent MDR1 selection system is very efficient for obtaining overexpression of foreign genes .

Output: MDR1 gene product

Input: Consider Input: Radioimmunoassay of plasma gonadotropins ; problems of specificity

Output: plasma gonadotropins

Input: Consider Input: These findings also demonstrate that unless excluded by other factors , the C proteins are likely to be located along the length of nascent transcripts .
Output: C proteins