What is "biolab"

Biolab (Biological Experiment Laboratory) is a single-rack multi-user science payload designed for use in the Columbus laboratory of the International Space Station. Biolab support biological research on small plants, small invertebrates, microorganisms, animal cells, and tissue cultures. It includes an incubator equipped with centrifuges in which the preceding experimental subjects can be subjected to controlled levels of accelerations.

These experiments help to identify "the role that microgravity plays at all levels of an organism, from the effects on a single cell up to a complex organism including humans."