Word: mammals
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...perfectly fossilized bones are remains of Paleoparadoxia ("Ancient contradiction"), an amphibious mammal bigger than a rhinoceros that wallowed in the shallows 15 to 20 million years ago when California's Coast Ranges had not yet risen and the site of inland Palo Alto was still under the sea. Paleoparadoxia belongs to a long-extinct order, the desmostylians, which lived the lives of saltwater hippopotamuses around the shores of the North Pacific. It was first found in Japan, but the Palo Alto skeleton is the only one found in North America...
...support of full body weight by the ears is not recommended for the care and handling of dogs, children, or any mammal, even if you want to "let them bark." I am shocked and dismayed. GILBERT O. SEW ALL, D.D.S. Secretary German Wirehaired Pointer Club
...grey-haired researcher continued: "Since at that time few scientists believed in the possibility of transmission of virus-caused avian tumors to any mammal, including man, I had worked for years without any special protection against the fowl-tumor virus, with my bare hands in contact with the blood and tumors of infected chickens and chick embryos almost daily. This could have amounted to a repeated inoculation with the virus, since there were usually cuts and scratches on my hands...
Since Dr. Davis developed cancer, other researchers have crossed the bird-mammal barrier and induced cancer in mice and monkeys with avian viruses. Dr. Davis may be the first identified human victim of a similar transfer. But it is not yet certain, because many tumor tissues look alike under the microscope. And Dr. Davis herself concedes: "Maybe it was just coincidence that I got this kind of cancer...
...years ago, Dr. Lyon proposed a revolutionary hypothesis. Every female mammal, whether mouse or woman, has two X (female) chromosomes, one each from father and mother. A male has one X and one Y. Since the X chromosome carries genes that control the production of many enzymes which in turn govern the body's chemistry, a female with two Xs should have twice as much of these enzymes as a male with one. But she doesn't. Dr. Lyon's proffered explanation: one of the female's X chromosomes is muted soon after conception and becomes...