✍ Scribed by Stelzer, W. ;Ziegert, E.
No coin nor oath required. For personal study only.
Untersuchungen zum Vorkommen von R+ -Bakterien im FluBwasser sZi,uma.ry: \Tit11 colonynninbers of 2 . 10'. ... 3 . 1 0 2 and coliform content,s of 2 . 103 ... 1 . 1 . 10; per ml, in the investigatrd river section 2.1 0 , ; of colonies were resistant to tetracyclinc, 0.3 O , , to rliloranipheiiicol, 7.5 o0 to kanamycin, 5.4 o(' o to trimcthoprini, 12.7 "/" t,o ampicillin and0.14 '1 ,, to gentamycin. For the coliforms t,he resistances were 5.1 O/[, to tetracycline, 3.1 O/o tbchloramphenicol, 2.7 0,' " t o kanamycin and 0.15 0:; to gentamycin. There were isolated 63 different resistance t,ypes. Of t,he resistant Klebsiellu strains 75 Oi0 were resistant t o three or more antibiotics. Of the coliform bacteria (Xscherichiu coli, Klebsiellu, Enterobacter, Citrobucter) 31.6 ... 51.9 0,; of the st.rains transferred their ant'ibiotics-resistance to Escheriehia coli K-12, for the antibiotics-resistant strains of Pse.udoinonns and derovrionas a transfer of resistance was not observed a t all.
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