Lymphatics and bone marrow.
D000717:Anatomy, Comparative; D000818:Animals; D001853:Bone Marrow / Q000033:anatomy & histology*; D002415:Cats; D004285:Dogs; D005260:Female; D006168:Guinea Pigs; D006801:Humans; D008208:Lymphatic System / Q000033:anatomy & histology*; D008297:Male; D011817:Rabbits