...David G. Simmons; David R. C. Natale; Valerie Begay; Martha Hughes; Achim Leutz; James C. Cross The labyrinth of the rodent placenta contains villi that are the site of nutrient exchange between mother and fetus. They are covered by three trophoblast cell types that separate the maternal blood...

... rise to neuromast mechanosensory organs and their afferent neurons. An additional contribution from the neural crest to the neuromasts has been observed( Collazo et al., 1994 ). * Author for correspondence (e-mail: dfekete@purdue.edu ) 1 2 2005 ©2005. 2005 Labyrinth Placode...

... ubiquitously, they exhibited phenotypic abnormalities restricted to the placenta. The mutant concepti failed to form a fetal placental labyrinth and died a day later. Fusion between the allantois and the chorionic plate occurred, allantoic blood vessels invaded the chorion, but then did not expand. Mutant...