共查询到20条相似文献，搜索用时 15 毫秒
1.
2.
3.
After acetylation of the phenolic fraction, the following compounds were isolated from Laminaria ochroleuca: phloroglucinol triacetate, diphlorethol pentaacetate (2,4,6,3′,5′-pentaacetoxydiphenyl ether) and triphlorethol C heptaacetate (1-acetoxy-3,5-bis(2,4,6-triacetoxyphenoxy)benzene). 相似文献
4.
5.
6.
Paul Weiss 《Development genes and evolution》1926,107(1):1-53
Ohne ZusammenfassungEine vorläufige Mitteilung der Ergebnisse dieser Arbeit erschien unter gleichlautendem Titel im Akadem. Anzeiger, Wien Nr. 5, vom 14. Februar 1924. 相似文献
7.
8.
9.
Tilly Edinger 《Pal?ontologische Zeitschrift》1963,37(1-2):49-55
Progress in paleontological brain research is demonstrated by giving some examples of recent discoveries which illustrate the various possibilities of studies in this field. An enlarged English text, with details and figures of the specimens cited, will be published in the Proceedings of the 3rd International Conference of Neurobiologists. 相似文献
10.
Theodor von Heldreich 《Plant Systematics and Evolution》1862,12(12):385-386
Ohne Zusammenfassung 相似文献
11.
12.
Von Marquardt Hans 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1947,17(13-15):447-449
Theoretical and Applied Genetics - 相似文献
13.
J. Nolte K. Rathsack N. Drusenheimer A. Dev U. Zechner T. Haaf A. Meinhardt H.W. Michelmann K. Nayernia Prof. Dr. W. Engel 《Medizinische Genetik》2007,19(1):10-17
The basis for the lifelong differentiation of male gametes are the spermatogonial stem cells (SSCs) in the testis (0.03% of all testicular cells). We and others have succeeded in the generation of SSCs and haploid male germ cells from mouse embryonic stem cells (ES cells). We injected these artificial spermatozoa into unfertilized oocytes, transferred the resulting two-cell embryos into the uterus of pseudopregnant female mice, and viable, fertile mice were born. Our approach provides an in vitro model for the molecular and biochemical analyses of male gametogenesis, especially meiosis and haploidisation. 相似文献
14.
15.
16.
17.
18.
19.
20.