共查询到20条相似文献,搜索用时 15 毫秒
1.
FINN N. RASMUSSEN 《Botanical journal of the Linnean Society. Linnean Society of London》1985,91(4):447-456
RASMUSSEN, F. N., 1985. The gynostemium of Bulbophyllum ecornutum (J. J. Smith) J.J. Smith (Orchidaceae) . Stages in the development of the gynostemium of Bulbophyllum ecornutum demonstrate that the pollinium stalk is a hamulus in this and in a closely related species, B. gibbolabium . A hamulus arises by apical growth and reflexion of the median carpel. Hamuli have recently been discovered in several orchid genera, and a transverse fold of the rostellar apex is already known from a large group of orchids. The closely related B. cornutum has a quite different gynostemium structure. 相似文献
2.
3.
4.
Donald Favareau 《Biotechnology Techniques》1996,10(6):381-384
Obituary: J.D. Bu'Lock (1928–1996) 相似文献
5.
6.
7.
8.
9.
10.
11.
M A Oettinger 《Current opinion in cell biology》1999,11(3):325-329
The vertebrate immune system has evolved an elegant mechanism for generating an enormous diversity in antigen receptor binding specificity from a limited amount of genetic information. Recent advances are rapidly increasing our understanding of this unusual site-specific DNA rearrangement that assembles the antigen receptor genes during lymphoid development. 相似文献
12.
13.
14.
15.
16.
17.
18.
19.
20.
Russian Journal of Marine Biology - The female fertile samples of the red alga Pleuroblepharidella japonica (Okamura) M.J. Wynne from coastal waters of Matua Islet (Kurile Islands) have been found... 相似文献