I had Emil Gernert as a recitation professor for biology and he is an expert in the natural sciences. Even more specifically, he is an expert in the mold Aspergillus because he has written an article on the physiology of the mold Aspergillus. He is highly rated at Baruch, he is a chair in the medical school recommendation committee and is responsible for developing upper level courses in the department.
Link: Emil Gernert