[The aggregation ability of the plague microbe].

Hemoglobin enhances the aggregation of the plague bacillus in fluids (p > 0.99), the proportion of its action on this process being 46.7%. The aggregated forms of the plague bacillus as conglomerates are of greater value in the virulence of the plague bacillus for white mice than are a series of plague bacilli or single microbes, which is an important factor in the mechanism of bacillus transmission. Block is an aggregated status of the plague bacillus in the gizzard of an effective vector.