10 in stock
W.m. Hooks and ridge for locking wings together on flight.
As of 1/5/12, 16 each in stock.
Owl Pellets are individually foil-wrapped and sterilized. Approximate 1 1/2 inch in size.
Peranema are small flagellates and range in size from 20-70 um in diameter. They are very active pre...
Spirostomum is one of the largest of protozoa and almost big enough to see with the naked eye.
Allow students to build a demonstration model of a human lung and learn the basic concepts of respir...