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.
01.10.2006 - Rats and mice are similar in appearance. In fact, people often confuse juvenile rats for mice, and the two do look extremely similar. While there are several species of rats and mice, I will examine the two most common ones, the Roof or Black Rat, and the House Mouse, both seen in the above photograph. As you can see, the biggest difference is size. Rats grow to a body of 8 inches and a tail of 9 inches, and a weight of almost a pound.