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.
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Question:  However , only plasma fibrinogen concentrations showed statistically significant positive associations with IMT in both groups .

Answer: plasma fibrinogen


Question:  Recently we have performed a detailed analysis of specific neuronal populations affected by the mutation which shed new light on the role of Krox - 20 in the segmentation and on the physiological consequences of its inactivation .

Answer: Krox - 20


Question:  It was previously shown that Vi antigen expression was regulated by a system similar to the rcs regulatory system involved in colanic acid synthesis in Escherichia coli .

Answer:
Vi antigen