Definition of ERYTHROPOIESIS. : the production of red blood cells (as from the bone marrow). â erythÂ·roÂ·poiÂ·etÂ·ic \-Ëe-tik\ adjective.
Today, on a Moment of Science, how humans are like rats. One argument against scientific experiments involving animals is that physiological differences between humans and other species is so great that an animalâs response to a certain procedure or medication actually tells us nothing about the likely human response.eâre both warm blooded, and rats eat everything we doâ¦ and live where we live. More importantly, rats and humans often suffer from the same diseases. Thatâs because humans and rats have the same basic physiology, similar organs, and similar body plans.
Characteristics: Norway rats have brownish fur, a yellowish-white belly and a scaly tail. Size: Adults generally weigh between 10 and 18 ounces and can reach lengths up to 18 inches, from nose to tail. Lifespan: The typical Norway rat in the city lives about six months to a year.