Word: mck
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PENNSYLVANIA. Medical Faculty Dean John McK. Mitchell: the school pays no attention to majors, is interested in the man and how he handled the courses rather than what courses he took...
First case so reported was that of a Mrs. McK., whose red cells were 60% type O and 40% type A (TIME, July 20, 1953). It seemed clear that she had derived them in the womb from a twin brother, but medical detectives could get only circumstantial evidence because the brother died in infancy. Now, in the British Medical Journal, research teams report two cases with both twins alive...
...conclusion that there had been connections between the placental blood vessels in each pair of twins during gestation. Blood cells in both men contained certain knobs (known as drumsticks, because of shape) usually found only in females. When chimerism occurs in cattle, the female is sterile-a freemartin. Mrs. McK. and Mrs. W. have each had three children, so human chimeras are not freemartins. Despite their originating from separate eggs, they may enjoy at least one of the advantages of identical (one-egg) twins: skin grafts between chimerical twins should "take" permanently...
Puzzled, the researchers asked Mrs. McK. whether she was a twin. No less puzzled by their apparent second sight, Mrs. McK. replied that she had had a twin brother, who died when three months old. That explained it, they figured: in the womb there had been a connection between the arteries of the fraternal twins, and Mrs. McK. had picked up some of her brother's blood-making cells...
...cattle, a female twinborn with a male is a freemartin, intersexed and usually sterile. Said the British Medical Journal: Mrs. McK. has had a child and is clearly feminine-no human freemartin...