J Rickenbacher

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Cholinesterase activity was investigated in the heart of the developing chick from the 6th to 20th day of incubation. The earliest cholinesterase-positive nerve cells and fibers could be demonstrated between the 7th and 9th day. On the 13th day the nervous structure attained full development comparable with that seen in the hatched chicken. The number of(More)
A 17-year-old female with severe pain of the midabdomen was found to have a retroperitoneal cystic tumor, an ectopic ovary and a fallopian tube without fimbriated end. An attempt is made to determine whether these early embryonic malformations could be traced to a common origin. This is possible provided that the tumor is regarded as a mesonephroma. A(More)