INTERACTION OF L-PNEUMOPHILA AND A FREE LIVING AMEBA (ACANTHAMOEBA, PALESTINENSIS)
INTERACTION OF L-PNEUMOPHILA AND A FREE LIVING AMEBA (ACANTHAMOEBA, PALESTINENSIS)
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DOI:
10.1017/s0022172400060174
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发表时间:
1983-01-01
影响因子:
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通讯作者:
KURTZ, JB
中科院分区:
文献类型:
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作者:
ANAND, CM;SKINNER, AR;KURTZ, JB
Co-cultivation of L. pneumophila serogroup I and A. palestinensis in Neff''s medium at 35.degree. C resulted in the intracellular multiplication of the bacteria as demonstrated by EM and immunofluorescence. In the closed experimental system used, the number of legionellae rose from 107 colony forming units (c.f.u.)/ml initially to a maximum of 1010 c.f.u./ml on day 5. Legionellae were seen in expelled phagosomes, in some amoebae filling the cytoplasm and in others in which the process of encystment appeared to have commenced. At 20.degree. C the acanthamoebae phagocytosed and digested the legionellae. The bacteria disappeared from the co-cultivation flask by day 2 but reappeared in low numbers (102 c.f.u./ml) by day 6 suggesting that even at this temperature some intra-amoebal multiplication occurred.