For a large number of problems there will be some animal of choice or a few such animals on which it can be most conveniently studied.
A. Krogh (1929). The progress of physiology, American Journal of Physiology 90:243–251.
For a large number of problems there will be some animal of choice or a few such animals on which it can be most conveniently studied.
A. Krogh (1929). The progress of physiology, American Journal of Physiology 90:243–251.