gastrointestinal epithelia from 13 to 34 weeks gestation demonstrated the most immunoreactivity with b72.3 although bronchial respiratory epithelium of the lung , transitional epithelium from the kidney , hassall 's corpuscles of the thymus , and gonadal tissues from fetuses of both sexes were also reactive .
C0229950
hassall 's corpuscles
C0040113
thymus