"compound microscope"

Why do we have kidneys?

Using Ward's safe and nontoxic simulated blood, students can simulate a blood-typing experiment and delve into the concepts of Rh typing.

Ever Wonder if your Blood is Type A, Type B, or Something Else?

Types A and B are virtually interchangeable and are miscible with each other for intermediate viscosities. Produced in larger quantities than other types. Type A, at 150 centistokes, reduces any tendancy to trap air. Type B, at 1250 centistokes, is thick enough for viewing multiple slides with one application.