Lack of increased numbers of low-density eosinophils in the circulation of asthmatic individuals.

The density distribution pattern of eosinophils over discontinuous isotonic Percoll gradients from the blood of normal, asymptomatic allergic and non-allergic asthmatic individuals was investigated. There was a completely identical distribution pattern between the investigated groups. Analysis of the expression of surface markers for complement receptors CR1 and CR3 and immunoglobulin G receptor on eosinophils derived from the density bands 1.