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Cross section of Scots pine leaf stained with Congo red and chrysoidine (cellulose appears red, lignin is yellow)

Cross section of Scots pine leaf stained with Congo red and chrysoidine (cellulose appears red, lignin is yellow)

Cross section of Scots pine leaf stained with Congo red and chrysoidine (cellulose appears red, lignin is yellow)

50x magnification

Grades Pre-school – 5

1024x683 / 628 kB

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