the occurrence of tumors of the thymus in 10-15 % and the presence of germinal centres in about 70 % of the thymus glands removed by operation are highly suggestive of the importance of the thymus in the pathogenesis , but the definite mechanism ( harbouring of an abnormal antigen in myoid cells , or/and false instruction of thymocytes with lack of suppressor cells ) is essentially unknown .
C0040100
the
C0040113
thymus