“…22 Extensive data on the outcome of bovine pregnancies conceived with frozen sperm also do not support the notion of genetic injury 19,20 ; however, choice of animal donors is based on careful analysis of pedigree and results of matings between bulls and their oldest female progeny. Human donors, in contrast, are While a number of authors have observed anomalous AID offspring, [23][24][25][26][27][28][29] these reports have primarily recorded isolated observations of sporadic cases. Few studies have involved formal observation and long-term follow-up.…”