title: Ammonia: basis for algal symbiosis in salamander egg masses.
mesh_terms: D000557:Ambystoma / Q000254:growth & development / Q000502:physiology*; D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D002696:Chlamydomonas / Q000502:physiology*; D005260:Female; D007814:Larva / Q000378:metabolism; D010063:Ovum / Q000378:metabolism; D013559:Symbiosis
chemical_list: D000641:Ammonia