On intracellular parasites inducing hypertrophic and hyperplastic changes (xenoma) in the ectodermal epithelium of the chorioallantoic membranes in the chick embryo.
D000818:Animals; D016782:Apicomplexa / Q000472:pathogenicity; D002642:Chick Embryo / Q000473:pathology*; D003593:Cytoplasm; D004475:Ectoderm / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D005321:Extraembryonic Membranes / Q000473:pathology*; D006965:Hyperplasia; D006984:Hypertrophy; D008858:Microscopy, Phase-Contrast; D010271:Parasites / Q000145:classification / Q000472:pathogenicity*