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Streptomyces 链霉菌属. Spontaneous mutations in E. coli (blue = - galactosidase activity. Antirrhinum, Snapdragon  龙头花 Somatic mutations are very frequent at low temperature because of a transposon jumping out of a flower color gene. Picture 400  230 pixels (small). LZW.

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Streptomyces 链霉菌属


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slide1

Streptomyces

链霉菌属

slide3

Antirrhinum, Snapdragon  龙头花

Somatic mutations are very frequent at low temperature because of a transposon jumping out of a flower color gene

slide4

Picture 400230 pixels (small)

LZW

Tif 300 kb  70 kb

JPG medium quality 26 kb

High contrast shows JPG artifacts ‘dirty ‘ image

slide5

Tif+LZW compression

70 kb

  • Clean pictures without artifacts;
  • pictures can be re-edited

PNG, automatic compression

55 kb

slide6

JPG highest quality

70 kb

large, almost clean file

For smallest clean line drawings:

avoid color gradients, save as Gif

Gif (indexed colour)

14 kb

sharp lines, smallest files, bad for color gradients

slide7

Jpg medium quality 25 kb dirty

Tif+LZW 70 kb clean

Gif 14 kb gradient artifact, clean lines

JPG max. quality 70 kb clean, gradient OK