FIG. 3.

Bleaching of pigmentation of Synechococcus sp. strain PCC 7002 during stationary phase. Wild-type cells of Synechococcus sp. strain PCC 7002 (strain PR6000) were grown in medium A⁺ (lane A, control) and in medium A-U (lane U). 3d, cells 3 days after initial inoculation, in the stationary growth phase. 4d, 4 days after initial inoculation, in the initial stages of bleaching or the death phase. 5d, completely bleached cells 5 days after initial inoculation, at the end of the death phase.