Silver birch pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from the flower of silver birch (Betula pendula). The outer wall of the grain (exine) has three pores. Silver birch pollen causes an allergic reaction in around a quarter of hay fever sufferers. Magnification: x4318 when printed at 10 centimetres wide.
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Details
Creative#:
TOP03201802
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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