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The phase-contrast microscopy of the pollenkitt in A. cepa: (a) pollen grains immediately after placing on a droplet of distilled water; pollenkitt appears as fragments released from the surface of pollen grains (white arrow). (b) the same pollen grains after 5 min; pollenkitt appears as a ”blanket” that keeps pollen grains on the surface of the droplet. Bars represent 50 m.
