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* Abbreviations: CPE = cytopathic effect, MB = methylene blue, CM = complete growth medium, CDM = chemically defined medium, BAF = bovine amniotic fluid, dil. = dilution, f = final, v.i. = vide infra, ab. = about, med = medium, TC = tissue culture. 1 E. KovÄcs, V. STÜRTZ and G. W A G N E R , Z. Naturforschg. 15 b, 116 [ I960] . 2 E. KovÄcs, G. W A G N E R and V. STÜRTZ , Z. Naturforschg. 15 b, ...

35 36 Here we describe for the first time the productive in vitro infection of human retinal pigment 37 epithelial cells by varicella-zoster virus (VZV) resulting in a typical cytopathic effect (CPE) 38 that is characterized by enlarged cells with increased granularity. Depending on CPE 39 dissemination high titres of up to 1.6 x 10 plaque forming units per millilitre of cell-free and 40 cryost...

Calf rotavirus was cultivated and propagated in tissue culture from faeces of 3-week-old calves suffering from severe diarrhoea. Criteria for viral involvement were: production of cytopathic effect in primary foetal calf kidney cells, specific fluorescence, and identification of the agent by means of electron microscopy. In a limited serological survey the majority of the cows on an infested fa...