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Comparative studies and evolution of muscles in chaetognaths
The chaetognath locomotory muscles exhibit astonishing variations. The secondary muscle, which represents less than 1% of the body wall, has two forms. One is unique in the animal kingdomExpand
Ultrastructural studies of neuromuscular junctions in visceral and skeletal muscles of the chaetognath Sagitta setosa
SummaryThe ultrastructural characteristics of the neuromuscular junctions were studied in oesophageal (visceral) muscle and in four skeletal muscles of the head and trunk in Sagitta.Three types ofExpand
Combined effect of chronic hypoxia and in vitro exposure to gas pollutants on airway reactivity.
This study investigated the interaction between exposure to air pollutants and chronic hypoxia (CH). We used a hypobaric chamber (14 days at barometric pressure 380 mmHg) to produce CH in rats.Expand
The junctional complex in the intestine of Sagitta setosa (Chaetognatha): the paired septate junction.
The junctional complex of the intestine of Sagitta setosa has been studied in tissues stained with uranyl acetate or after lanthanum impregnation, and by freeze-cleavage. All types of junctions haveExpand
One of the origins of plasma membrane phosphatidylserine in plant cells is a local synthesis by a serine exchange activity
In plant cells, as in animal cells, the endoplasmic reticulum (ER) is considered to be the major site of phospholipid synthesis, and it has been shown that phosphatidylserine (PS) reaches the plasmaExpand
Ultrastructural and physiological studies of the contraction of the trunk musculature of Sagitta setosa (chaetognath).
The relationships between structure and function of the contractile apparatus of the trunk musculature in the chaetognath Sagitta setosa, were studied by electron microscopy and mechanicalExpand
The primary body-wall musculature in the arrow-worm Sagitta setosa (Chaetognatha): an ultrastructural study.
The primary musculature of Sagitta is mainly made up of two kinds of alternating fibers, A and B. These fibers differ markedly in their localization in the muscular tissue, by the development ofExpand
Wound healing and survival of beheaded chaetognaths
The observation in natural conditions of headless chaetognaths with healed scars and ripe gonads led us to reproduce this condition experimentally. Histological sections were made on specimens ofExpand
Ultrastructural study and ontogenesis of the appendages and related musculature of Paraspadella (Chaetognatha).
A lineage of benthic chaetognaths has developed limb-like appendages on the caudal part of the body, resulting from a local modification of the lateral fins, which are folds of the epidermis and haveExpand
Preparation of an inner membrane-matrix fraction from yeast mitochondria
Abstract Treatment of yeast mitochondria with digitonin was used in order to prepare an inner membrane-matrix fraction preserving its permeability properties. The incubation time of mitochondria withExpand