| 单词 | placentation |
| 例句 | An artificial womb has been created for a relative of the grey nurse shark, but sharks’ placentation and how they grow in the womb is a bit less complicated than in humans. The future of sex 2012-09-19T19:20:00Z The placenta develops throughout the embryonic period and during the first several weeks of the fetal period; placentation is complete by weeks 14–16. Anatomy and Physiology 2013-06-19T00:00:00Z The degree of placentation in a human is much, much higher than it is in other mammals. "Evolution Gone Wrong" author: "I just didn't realize how many things humans are up against" 2021-05-30T04:00:00Z "Most of you probably realize that my point was to show that mammals are especially prone to invasive cancers because mammals evolved invasive placentation," he wrote, according to a tweet from Griswold. California professor slammed for calling fetus 'legitimate parasite' during lecture on cancer 2019-04-29T04:00:00Z The disjunction or dialysis of the carpels, for instance, frequently renders axile placentation marginal. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants There is only one of these that need be specially mentioned—the important fact, established by Selenka in 1890, that the distinctive human placentation is confined to the anthropoids. The Evolution of Man — Volume 1 Nurse Callan taken aback in the hallway cannot stay them nor smiling surgeon coming downstairs with news of placentation ended, a full pound if a milligramme. Ulysses In the flowers of Saponaria officinalis Dr. Masters has observed instances of both marginal and free central placentation. The Origin of Species by means of Natural Selection, 6th Edition On the subject of placentation the following authors may be consulted: R. Brown, 'Ann. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants In malformed flowers of Digitalis the change from axile to parietal placentation may often be seen. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants But the remarkable discoveries published by the distinguished zoologist Selenka in 1890 proved that man shares these peculiarities of placentation with the anthropoid apes, though they are not found in the other apes. The Evolution of Man — Volume 1 In some flowers of Rhododendron I have observed a similar condition of the ovules, which, moreover, in the primary flowers, were attached to the walls of the carpels—parietal placentation. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Thus, in the case of marginal placentation the number must be limited by the narrow space from which they proceed, whereas in parietal and free central placentation the ovules are generally numerous. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The placentation is constantly axile in the inferior row and parietal in the upper one. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants In double flowers of Primulaceæ similar alterations in the placentation may often be observed. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants |
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