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.

 The studies presented here are consistent with the essential role of these factors in the relative levels of protection conferred by vaccination with heat - killed B . pseudomallei and would appear to be viable early markers for protection from lethal acute infection [ 9 ] .
B . pseudomallei