title: Comparative organ system development: continuing the series.
authors.affiliation: Pfizer Global Research and Development, Drug Safety Evaluation, Groton, Connecticut 06340, USA. mark_e_hurtt@groton.pfizer.com
authors.forename: Mark E
authors.initials: ME
authors.lastname: Hurtt
authors.forename: J David
authors.initials: JD
authors.lastname: Sandler
mesh_terms: D000825:Animal Structures / Q000254:growth & development; D000818:Animals; D006321:Heart / Q000254:growth & development*; D006801:Humans; D007107:Immune System / Q000254:growth & development*