placodes

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placodes (plak´ōds),

n.pl the thick, flat sections of embryonic ectoderm on the facial surface of the embryo from which the sense organs develop.

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anal pit auditory pit lens pit nasal pit olfactory olfactory bulb olfactory nerve olfactory pit pit pit of stomach pit viper			The nasal placodes (olfactory placodes) arise from the medial aspect of the lower portion of the frontal prominence, and the lens placodes arise from the lateral aspect of the lower portion of the frontal prominence. Supernumerary nostril with congenital cataract by Bit, Utpal Kumar / Ear, Nose and Throat Journal Vertebrates have three types of embryonic tissue not present in invertebrates: neural crest cells, ectodermic placodes, and a modified paraxial mesoderm. Jump-start for the vertebrates; new clues to how our ancestors got a ... by Monastersky, Ronald / Science News The nasal placodes develop as early as the third week of gestation. Schneiderian papilloma of the nasopharynx. (Original Article) by Ramesh, Girija / Ear, Nose and Throat Journal			placental membrane placental presentation placental scan placental sinus placental site trophoblastic tumor placental souffle placental stage of labor placental thrombosis placental transfusion placental transmission placentation placentitis placentography placentoid placentoma placentome placentopathy placentophagia Placentophagy Placido's disk Placidox Placidyl placing Placobdella placode placodes placoid plafon fracture plafond plagiarism plagio- Plagiobothrys plagiocephaly Plagiorchis Plagiorhynchus formosus plague plague vaccine plain plain film plainhead plains bahia plains milkweed plains plover-daisy plaintiff plan Plan B Plan B One-Step plan of care plan providers Plan Specificity planar			placing response placing response Placing the Issue Placing the Issue Placing the Issue Placing the Issue Placing the Issue placings placings placings placings Placit placita Placitory Placitum Placitum Plack placket plackets Placobdella placode placode placoderm placoderm Placodermal Placodermata Placodermi Placodermi Placoderms Placoderms placodes Placodont Placodontia Placoganoid Placoganoidei placoid placoid Placoid fish Placoid fish Placoid fishes Placoid fishes Placoid scale Placoid scale Placoides Placoides placoidian Placophora Placothuriidae Placque Placque Placque PLACS PLACT Placuna Placuna placenta Placzek, Adolph K. PLAD PLAD/CBTOS PLADO PLADS PLAE

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