The life cycle of the lungworm, Pneumostrongylus calcaratus.
D000818:Animals; D000866:Antelopes; D006041:Goats; D006168:Guinea Pigs; D007814:Larva / Q000033:anatomy & histology; D009348:Nematoda / Q000033:anatomy & histology / Q000254:growth & development*; D012756:Sheep