Wiley
0022-104X
1097-010X
Cơ quản chủ quản: N/A
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Các bài báo tiêu biểu
Cytoplasmic control of nuclear behavior during meiotic maturation of frog oocytesAbstract Fully grown oocytes of the frog (Rana pipiens ) undergo cytoplasmic and nuclear maturation when treated with progesterone after the follicular envelopes have been removed. The mechanism of this maturation was investigated by injection of cytoplasm from progesterone‐treated oocytes at various stages of maturation into fully grown bu... ...
Tập 177 Số 2 - Trang 129-145 - 1971
Evidence for the formation of cell aggregates by chemotaxis in the development of the slime mold Dictyostelium discoideum
Tập 106 Số 1 - Trang 1-26 - 1947
Mollusc larval shell formation: amorphous calcium carbonate is a precursor phase for aragoniteAbstract The larval shells of the marine bivalves Mercenaria mercenaria and Crassostrea gigas are investigated by polarized light microscopy, infrared spectroscopy, Raman imaging spectroscopy, and scanning electron microscopy. Both species contain similar shell ultrastructures. We show that larval shells contain ... ...
Tập 293 Số 5 - Trang 478-491 - 2002
Lactate dehydrogenase isozyme patterns of fishAbstract Representatives of 30 species of fish were examined for their content of LDH isozymes. One major isozyme system was found in all fish. In addition, two minor systems restricted to eyes and to gonads were found in many fish. Fish may be classified into four groups on the basis of their possession of one, two, three, or five major isozymes of LDH. The major i... ...
Tập 159 Số 3 - Trang 319-332 - 1965
Na+, Cl−, Ca2+ and Zn2+ transport by fish gills: retrospective review and prospective synthesisAbstract The secondary active Cl− secretion in seawater (SW) teleost fish gills and elasmobranch rectal gland involves basolateral Na+ ,K+ ‐ATPase and NKCC, apical membrane CFTR anion channels, and a paracellular Na+ ‐selective conductance. In freshwater (FW) teleost gill, the mechanism... ...
Tập 293 Số 3 - Trang 264-283 - 2002
A triple‐stain technique for evaluating normal acrosome reactions of human spermAbstract A triple‐stain technique has been developed to score normal acrosome‐reacted human sperm in fixed smears. Live and dead sperm are first differentiated using the vital stain trypan blue. Sperm are then fixed in glutar‐aldehyde, dried onto slides, and the postacrosomal region and acrosome are differentiated using Bismark brown and Rose Bengal. Slides are exam... ...
Tập 215 Số 2 - Trang 201-208 - 1981
Fish gill morphology: inside outAbstract In this short review of fish gill morphology we cover some basic gross anatomy as well as in some more detail the microscopic anatomy of the branchial epithelia from representatives of the major extant groups of fishes (Agnathans, Elasmobranchs, and Teleosts). The agnathan hagfishes have primitive gill pouches, while the lampreys have arch‐like gills simila... ...
Tập 293 Số 3 - Trang 192-213 - 2002
Temperature‐dependent sex determination in crocodiliansAbstract Half of the 22 extant crocodilians show evidence of temperature‐dependent sex determination (TSD). We examine evidence for TSD in 11 species by reviewing reports on five and presenting new data for six. The female‐male pattern (FM; females at low temperature, males at high temperature) attributed to Alligator mississippiensis and ... ...
Tập 270 Số 1 - Trang 28-44 - 1994
Patterns of temperature‐dependent sex determination in turtlesAbstract Among reptiles that show temperature‐dependent sex determination, sex ratios vary across constant incubation temperatures in ways sufficiently predictable to allow classification into patterns. One common pattern shows low temperatures yielding only males and high temperatures yielding only females. Another common pattern has low as well as high temperature... ...
Tập 270 Số 1 - Trang 3-15 - 1994