DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Pine pollen grains. Light micrograph of a section through winged pollen grains (microspores) from a pine (Pinus sp.) tree. The wings (light blue) are like two air balloons that keep the grains in the air currents and enable them to be spread over a greater distance. Magnification: x138 when printed 10 centimetres wide.
Model release not required. Property release not available.