[An immunofluorescence study of the ontogenesis of mouse thyroid organ-specific antigens: relation to fate of foetal thyroid homografts in adult recipients (author's transl)].

A study of the development of organ specific thyroid antigens in mice showed that these antigens make their appearance on the 17th day of gestation. This causes an increase in the specific antigenicity of the thyroid and coincides with the critical stages at which the fate of a homograft of embryonic thyroid is seen to change: embryonic thyroid tissue from 15-16 day embryo grafted on an adult recipient is accepted but if taken from a 17 day embryo it is rejected.