通常认为胸腺的功能与免疫力的发展(如血清抗体的形成、细胞免疫、迟发超敏反应和异体移植排斥)是密切相关的。本试验目的在于从新生期胸腺摘除小鼠的网状内皮系统的主要脏器即肝、脾、肺、肾中连续收获的麻风杆菌来测定此种感染的范围,并测定由鼠足垫反映出来的低温度是否为麻风杆菌繁殖所确实需要。 Thymic function is generally considered to be closely related to the development of immunity such as serum antibody formation, cellular immunity, delayed hypersensitivity and allograft rejection. The purpose of this experiment is to determine the extent of this infection by detecting the leprosy bacilli continuously harvested from the neonatal thymus-removed mouse reticuloendothelial system, ie, liver, spleen, lung and kidney, and to measure the extent of this infection The low temperature is really needed for M. leprae breeding.