My favorite animal of all has just had its origin moved from America to Asia. A well preserved skull of a ~2.35 million year old cheetah has just been unearthed in China, and that old age suggests that the cheetah is not so closely related to the puma.
I took this picture in San Diego Zoo. Ain't it a beaut?
Here's a picture of a San Diego Zoo puma I took while it was stalking its preferred prey: my two-year old boy, Bjarke.
Does expression of the toxA operon depend on ToxT as well as ToxA?
1 day ago in RRResearch