Zobrazeno 1 - 10
of 244
pro vyhledávání: '"Biological Sciences: Microbiology"'
Publikováno v:
Proceedings of the National Academy of Sciences. 75:4558-4562
Several virion and nonvirion DNAs were tested for the ability to activate endogenous type C virus in BALB/c-derived mouse cells using the calcium precipitation technique. The DNAs from all herpesviruses tested activated xenotropic type C virus synthe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24bc37d2d37f138798f5f01bd1c485b4
https://doi.org/10.1073/pnas.75.9.4558
https://doi.org/10.1073/pnas.75.9.4558
Publikováno v:
Proceedings of the National Academy of Sciences. 71:4015-4019
Temperature sensitive mutants of Mycoplasma pneumoniae were developed with the expectation that their temperature sensitive defects would restrict replication in vivo at the temperature of the lower respiratory tract, whereas such defects would not s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d968ec999dc9a01d751596cf6601e607
https://doi.org/10.1073/pnas.71.10.4015
https://doi.org/10.1073/pnas.71.10.4015
Autor:
R. B. Peterson, C. P. Wolk
Publikováno v:
Proceedings of the National Academy of Sciences. 75:6271-6275
Heterocysts were isolated from the N 2 -fixing cyanobacterium Anabaena variabilis after vegetative cells were disrupted by treatment with lysozyme and cavitation in a sonic cleaning bath. The acetylene-reducing (nitrogenase) activity of the isolated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a90f2e5906bcb3eaeb6e1a714fb708b
https://doi.org/10.1073/pnas.75.12.6271
https://doi.org/10.1073/pnas.75.12.6271
Publikováno v:
Proceedings of the National Academy of Sciences. 76:5355-5359
We have recently identified a 21,000-dalton protein, p21, coded for by Kirsten or Harvey murine sarcoma virus. On the basis of the results obtained with the p21 of a mutant of Kirsten sarcoma virus, temperature sensitive for the maintenance of transf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fff29aeb4aeaa2103b4b91216fb20a89
https://doi.org/10.1073/pnas.76.10.5355
https://doi.org/10.1073/pnas.76.10.5355
Autor:
Catherine J. Potrikus, John A. Breznak
Publikováno v:
Proceedings of the National Academy of Sciences. 78:4601-4605
Reticulitermes flavipes termites synthesize uric acid via purine-nucleoside phosphorylase (purine-nucleoside: orthophosphate ribosyltransferase, EC 2.4.2.1) and xanthine dehydrogenase (xanthine:NAD + oxidoreductase, EC 1.2.1.37), but their tissues la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2783ed56110293a4b39fd0103b1f67e8
https://doi.org/10.1073/pnas.78.7.4601
https://doi.org/10.1073/pnas.78.7.4601
Publikováno v:
Proceedings of the National Academy of Sciences. 71:4006-4010
Biologic activities of extracellular Epstein-Barr virus (EB virus) from two laboratory strains, namely, P 3 J-HR-1 (P-H) from Burkitt lymphoma and B95-8 (B95) from infectious mononucleosis, were compared. Virus stocks from both sources contained appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::472c8fca08b9e7c34d9495348c9bf824
https://doi.org/10.1073/pnas.71.10.4006
https://doi.org/10.1073/pnas.71.10.4006
Autor:
Elliott Kieff, Judith Levine
Publikováno v:
Proceedings of the National Academy of Sciences. 71:355-358
At least 90% of the sequences of purified, in vitro labeled, DNA from Epstein-Barr virus (prepared from HR-1, Burkitt's lymphoblastoid cells) are homologous to the DNA of the herpes virus contained in cell lines derived from patients with infectious
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::441536187e45b3c82241105328a835ca
https://doi.org/10.1073/pnas.71.2.355
https://doi.org/10.1073/pnas.71.2.355
Publikováno v:
Proceedings of the National Academy of Sciences. 76:5957-5961
We have shown that the circulating lipoproteins of the mouse contain a potent inhibitor of infectivity of the xenotropic type C virus. This virus neutralization does not involve immunoglobulins or complement. After fractionation of the lipoproteins o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::731d1ce2eb0c6d2e2b0aa41ab9274b3c
https://doi.org/10.1073/pnas.76.11.5957
https://doi.org/10.1073/pnas.76.11.5957
Publikováno v:
Proceedings of the National Academy of Sciences. 71:2956-2960
Infectious B virions of vesicular stomatitis virus were 100% lethal to BHK 21 (baby hamster kidney) cells when infecting alone, and persistent noncytocidal infection could not be achieved with cloned B virions alone. However, a mixture of B virions a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f87698563008f7900a712b63e584571c
https://doi.org/10.1073/pnas.71.8.2956
https://doi.org/10.1073/pnas.71.8.2956
Publikováno v:
Proceedings of the National Academy of Sciences. 77:619-623
Cytokinin activity in the culture medium of four pathogenic strains of Corynebacterium fascians varied from 168 to 0.4 μg of kinetin (6-furfurylaminopurine) equivalents per liter, as compared to 0.2 in an avirulent control. N 6 -Isopentenyladenine w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3c6d23c4f8511a52a8dd4d03e315095
https://doi.org/10.1073/pnas.77.1.619
https://doi.org/10.1073/pnas.77.1.619