Since the entrance of the spermatozoon causes that degree of cytolysis which leads to membrane-formation, it is probable that, in addition to the cytolytic or membrane-forming substance (presumably a higher fatty acid), it carries another substance into the egg which counteracts the deleterious cytolytic effects underlying membrane-formation.英文原著 · 《Darwin and Modern Science》
After the rupture of the membranes the first child presented by the shoulder. Version was readily performed; the child was dead (recently). Examination after the birth of the first child disclosed the existence of more than one remaining fetus. The membranes protruded and became tense with each contraction. The presentation was a transverse one. In this case also there was little difficulty in effecting internal version. The child lived a couple of hours. The third fetus was also enclosed in a separate sac, which had to be ruptured.英文原著 · 《Anomalies and Curiosities of Medicine》
If, however, they are left in the sea-water containing the saponin they undergo, a few minutes after membrane-formation, the disintegration known in pathology as CYTOLYSIS. Membrane-formation is, therefore, caused by a superficial or incomplete cytolysis. The writer believes that the subsequent treatment of the egg with hypertonic sea-water is needed only to overcome the destructive effects of this partial cytolysis. The full reasons for this belief cannot be given in a short essay.英文原著 · 《Darwin and Modern Science》
As Professor of Vocal Physiology in the University of Boston, he was engaged in training teachers in the art of instructing deaf mutes how to speak, and experimented with the Leon Scott phonautograph in recording the vibrations of speech. This apparatus consists essentially of a thin membrane vibrated by the voice and carrying a light stylus, which traces an undulatory line on a plate of smoked glass. The line is a graphic representation of the vibrations of the membrane and the waves of sound in the air.英文原著 · 《Heroes of the Telegraph》
[A giggle from Fanny Dover.] Thanks to your microscope, I have made sketches of several amphibia who live in those boys' stomachs, and irritate their membranes, and share their scanty nourishment, besides other injuries." Thereupon she produced some drawings.英文原著 · 《A Woman-Hater》
Two placentae were expelled some time after the twins, and showed a membranous junction. The children died shortly after birth. Pregnancy often takes place in a unicorn or bicorn uterus, leading to similar anomalous conditions. Galle, Hoffman, Massen, and Sanger give interesting accounts of this occurrence, and Ross relates an instance of triple pregnancy in a double uterus. Cleveland describes a discharge of an anomalous deciduous membrane during pregnancy which was probably from the unimpregnated half of a double uterus.英文原著 · 《Anomalies and Curiosities of Medicine》
So while an animal cell has a membrane, a plant cell has a membrane and a cell wall.美剧 · 《Young Sheldon》