Parental mosaicism for trisomy-21 is a recognized reason for the birth of mongol children, and the possibility of parental mosaicism may be suspected especially in couples who produce more than one 'regular' mongol. However, in a recent review, Richards (1970) found only 11 documented instances of this occurrence. We wish to describe another woman in whom mosaicism was suspected clinically but ...

in research on the history of medicine, less attention is paid to the subject of historical geography . considering the importance of this subject in the history of science, this paper discusses one of the most important science centers in the world. this outstanding medical research center was located in gorganch city, chorasmia area, in the eastern part of the islamic. chorasmia medical schoo...

Calcific aortic stenosis (AS) was initially characterized as a degenerative process (disorder) because of a tendency to describe any disorder that was not well understood and often occurred in the ‘elderly’ as degenerative. In the last ‘15–20’ years, the observation of the presence of risk factors for arterial atherosclerosis in patients with calcific AS, the production of aortic valve calcific...