Studies on young germ-free mice. I. Stress reaction of germ-free mice.
D000222:Adaptation, Physiological; D000818:Animals; D001835:Body Weight; D003080:Cold Temperature; D005856:Germ-Free Life; D007958:Leukocyte Count; D008214:Lymphocytes / Q000502:physiology; D008221:Lymphoid Tissue / Q000502:physiology*; D008297:Male; D051379:Mice; D009929:Organ Size; D013154:Spleen / Q000254:growth & development / Q000502:physiology; D013950:Thymus Gland / Q000254:growth & development / Q000502:physiology