In this study, 40 individuals of Callithrix jacchus were analyzed in order to investigate the frequency of chimerism and to determine whether the fertility of the colony was in any way affected by chimerism. In the individuals considered the degree of chimerism ranged from 2% to 97% and no correlation was established between the degree of chimerism and fertility of the individuals. Many "good breeders" were chimeric and the best female breeders displayed 84% and 97% chimerism respectively.
- Blood chimerism
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