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排序方式: 共有1974条查询结果,搜索用时 78 毫秒
961.
J de Saint Martin H Mukoyama A Eyquem 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1978,286(15):1183-1186
Anti-idiotypic sera were obtained in Rabbits immunized with Rh antibodies (isolated from the serum sample collected in 1974 from a Blood Donor). The sera agglutinate, at high titers, red cells coated with the immunizing antibodies and, at different titers, cells coated with antibodies from serum samples taken at other periods. Inhibition of hemagglutination of anti-idiotypic sera by different samples from the same Donor was complete with the immunizing serum and partial with other samples. These results show that idiotypes or idiotypic specificities appeared or disappeared during the period studied and represent the first observation on evolution of antibody idiotypy in Man. 相似文献
962.
D Leprince A Gegonne J Coll C de Taisne A Schneeberger C Lagrou D Stehelin 《Nature》1983,306(5941):395-397
The acute avian leukaemia retroviruses AMV and E26 both induce myeloblastosis in vivo and transform myeloblasts in vitro. Both viruses contain the oncogene v-myb first described for AMV. Unlike AMV, E26 has the additional capacity to induce erythroblastosis in vivo and to transform erythroblasts. Previous analyses indicated that the genome of E26 also contained nucleotide sequences distinct from v-myb and unrelated to viral replicative genes. Using a molecularly cloned E26 provirus, we have now identified a novel nucleotide sequence designated v-ets (for E-twenty-six specific) of approximately 1.5 kilobase pairs (kbp) located next to v-myb. v-ets possesses all the structural characteristics of a putative new oncogene: it has a conserved cellular counterpart c-ets which is transcribed in some normal chicken cells as a major 7.5-kb polyadenylated RNA. Although our results now await elucidation of their biological significance, we propose that v-ets could be a new oncogene accounting for the additional transforming properties of E26, or potentiating the transforming properties of the v-myb oncogene. 相似文献
963.
A. Anastasi L. Bernardi G. Bertaccini G. Bosisio R. de Castiglione V. Erspamer O. Goffredo M. Impicciatore 《Cellular and molecular life sciences : CMLS》1968,24(8):771-773
Riassunto Vengono descritte le proprietà di una serie di peptidi sintetici affini alla ceruleina e si discutono brevemente i rapporti fra attività e struttura.
A. Anastasi, V. Erspamer andR. Endean, Experientia23, 699 (1967).
This work was in part supported by grants from the Consiglio Nazionale delle Ricerche, Roma. 相似文献
A. Anastasi, V. Erspamer andR. Endean, Experientia23, 699 (1967).
This work was in part supported by grants from the Consiglio Nazionale delle Ricerche, Roma. 相似文献
964.
L. Bernardi G. Bosisio F. Chillemi G. de Caro R. de Castiglione V. Erspamer O. Goffredo 《Cellular and molecular life sciences : CMLS》1966,22(1):29-31
Riassunto Vengono riportate le proprietà di una serie di peptidi sintetici affini per struttura alla fisalemina. 相似文献
965.
Zusammenfassung Eine quantitative mikroskopische Analyse von Zellen, die man bei 1000 U/min zytozentrifugiert hatte, zeigte, dass die Zellen Proteinbestandteile des Zytoplasmas verlieren, während der DNS-Gehalt des Kerns unverändert bleibt. Untersuchungen von 8 verschiedenen Zellarten ergaben, dass die beobachteten Verluste spezifisch von der Zellart abhängen und mit der Struktur der Zellmembran zusammenhängen könnten.
These studies were supported in part by research grants No. C-6516 from the National Cancer Institute, and No. FR-05526 from the Division of Research Facilities and Resources, National Institutes of Health. 相似文献
These studies were supported in part by research grants No. C-6516 from the National Cancer Institute, and No. FR-05526 from the Division of Research Facilities and Resources, National Institutes of Health. 相似文献
966.
967.
968.
969.
970.
Riassunto L'estere metilico dell'acidotrans-monociclofarnesico (5) è stato ora isolato dalla spugnaHalichondria panicea. Il suo rinvenimento nello stesso organismo, dal quale erano state isolate precedentemente le paniceine. (1–3), supporta l'ipotesi che la parte sesquiterpenoidica di quest'ultime si origini biogeneticamente da un precursore monociclofarnesilico. 相似文献