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WP06546
Oak
(
Quercus robur
)
branch
sectioned
to
show
xylem
tubules
arranged
in
growth
rings
and
medullary
ray
to left of image.
WP06546
Oak (
Quercus robur
) branch sectioned to show xylem tubules arranged in growth rings and medullary ray to left of image.
Wood grain
British trees
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