title: [Presence in the heart of Protopterus annectens (Fishes, Dipneuste) of nodal and conducting cells histologically distinct from common myocardial cells].
abstract: Contrary to Francis and Davies's assumption according to which the impulse-conducting system of the Homoiothermal Vertebrates is a neomorphic structure, we have been able to identify in the heart of a Poikilothermal (Protopterus) impulse-conducting cells which possess distinctive histological characters.
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology*; D006329:Heart Conduction System / Q000166:cytology*; D006652:Histological Techniques
vernacular_title: Sur la présence dans le coeur de Protopterus annectens (Poisson Dipneuste) de cellules nodales et conductrices histologiquement distinctes des cellules myocardiques ordinaires