ABSTRACT
Manypapershavebeenpublishedonthegrowthofarbovirusesincellculturesof variouskinds,butusuallythecytopathiceffectsnotedhavebeenofagrosslyovert natureonly,comprisinggranularityandroundingofcellsstartingfocallyandthen proceedingtocompletedestructionofthecellsheet.Plaquesofdegeneratedcellsunder agaroverlayhavebeenusedforarbovirusassays.
