A recent paper (Pereira, et al., 1966) reported the isolation in Britain of several strains of an antibiotic-resistant infective agent that caused unusual cytopathic effects when inoculated into cell cultures. The new agent was evidently recoverable from the respiratory tract in certain patients, mostly young children, with illnesses of varying severity but with fever and respiratory symptoms a...

Our laboratory in The Gambia, West Africa, performs Koga agar (1.5% bacteriological agar, 0.5% sodium chloride, 0.5% meat extract, 0.1% bacteriological peptone) culture for larvae of strongyle nematodes on human fecal samples for which parasitological investigation has been requested. We have recovered freeliving amoebae (FLA) from human fecal specimens on two occasions over a period of 9 month...

Determining the precise position of the root of the eukaryote evolutionary tree is very important for understanding cell evolution [1], but has been a major challenge, because of systematic biases in gene sequence trees [2,3]. However, one can deduce the position indirectly, by using derived genic properties to exclude the possibility that the root lies within clades that share them [4]. A deri...

In the soils of forest-steppe zone Ukraine we found 12 morphotypes naked amoebae: eruptive (Vahlkampfa sp. (1), Vahlkampfa (2), Willaertia sp.), politactic (Polychaos dubium Schaeffer, 1917, Deuteramoeba mycophaga Page, 1988), monotactic (Saccamoeba stagnicola 1974, Hartmannella vermiformis 1967, Cashia limacoides 1974), lens-like (Cochliopodium (1)), striate (Thecamoeba striata Penard, 1890, T...