Introduction to microbiology laboratory techniques and experimental demonstration of principles of microbiology. One lecture and three laboratory hours a week for one semester. Biology 226L and Molecular Biosciences 226L may not both be counted. Prerequisite: Credit with a grade of at least C- or registration for Molecular Biosciences 326M (or credit with a grade of at least C- for Biology 326M) or 326R (or credit with a grade of at least C- for Biology 326R).