منابع مشابه
Hans Spemann (1869-1941)
Hans Spemann [5] was an experimental embryologist best known for his transplantation studies [6] and as the originator of the ?organizer? concept. One of his earliest experiments involved constricting the blastomeres of a fertilized salamander [7] egg [8] with a noose of fine baby hair, resulting in a partially double embryo with two heads and one tail. Spemann continued changing variables such...
متن کاملC1lc20180h 1864..1869
This paper presents a tunable optofluidic prism based on the configuration of two laminar flow streams with different refractive indices in a triangular chamber. The chambers with 70 and 90 apex angles are designed based on simulation results, which provide the optimum working range and avoid recirculating flows in the chambers. In addition, a hydrodynamic model has been developed to predict th...
متن کاملDev115329 1869..1878
The transmembrane protein Crumbs (Crb) functions in apical polarity and epithelial integrity. To better understand its role in epithelial morphogenesis, we examined Crb localization and dynamics in the late follicular epithelium of Drosophila. Crb was unexpectedly dynamic during middle-to-late stages of egg chamber development, being lost from the marginal zone (MZ) in stage 9 before abruptly r...
متن کاملLeo Loeb (1869-1959)
Leo Loeb [6] developed an experimental approach to studying cancer and pioneered techniques for tissue culture and in vitro [7] tissue transplantation which impacted early-to-mid twentieth century experimental embryology [8]. Loeb received his medical degree from the University of Zurich [9] in 1897. As part of his doctorate, he completed a thesis on the outcomes of tissue transplantation in gu...
متن کاملEmma Goldman (1869?1940)
Emma Goldman was a traveling public speaker and writer known for her anarchist political views as well as her opinions on contraception [3] and birth limiting in the late nineteenth century in the United States. Goldman identified as an anarchist, which she explained as being part of an ideology in which people use violence to provoke or demand social and political change. Goldman was involved ...
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ژورنال
عنوان ژورنال: The Canadian Entomologist
سال: 1950
ISSN: 0008-347X,1918-3240
DOI: 10.4039/ent8290-4