Simultaneous isolation of bovine eosinophils and neutrophils on gradients of Percoll.

Bovine eosinophils and neutrophils have been isolated from venous blood using a two-step procedure which involves initial preparation of a granulocyte-rich fraction by centrifugation and osmotic shock followed by sensity gradient centrifugation on Percoll. Good yields of both cell types are obtained with purities of 90% or better. The isolated cells are viable and actively phagocytic. The effects of phagocytosis on the metabolism of carbon-1 of d-glucose and the incorporation of iodine have been measured and several differences between bovine cells and those of other species were noted.