Tuesday, April 28, 2020
Wednesday, April 22, 2020
Colony morphology, capsules and negative staining with Indian ink.
Bergey's Manual of Determinative Bacteriology describes colony morphology. Colony morphology is described in terms of form, elevation, margin, surface, opacity and chromogenesis.
The capsule of bacterial colonies, when present, is impermeable to biological dyes and cannot be stained, so negative staining with Indian ink is used. The capsule is then viewed as a clear halo surrounding the bacteria.
Returning to ink stamped over oil pastel.
ink and oil on paper, 10x10 cm |
Thursday, April 16, 2020
Phoenix blossom series
Tuesday, April 14, 2020
Monday, April 13, 2020
Sunday, April 12, 2020
Friday, April 3, 2020
White illusion
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