Stock Photo: Colorized scanning electron microscope image of two pollen grains, peony (left) and castor bean (right). The pollen has been acetolyzed to remove cytoplasm and pollenkit in order to reveal the intricate wall structure. Peony: Family: Paeoniaceae: Paeonia lactiflora. Castor bean plant: Family: Euphorbiaceae (spurge) Ricinus communis

Stock Photo: 4297-1015 Colorized scanning electron microscope image of two pollen grains, peony (left) and castor bean (right). The pollen has been acetolyzed to remove cytoplasm and pollenkit in order to reveal the intricate wall structure. Peony: Family: Paeoniaceae: Paeonia lactiflora. Castor bean plant: Family: Euphorbiaceae (spurge) Ricinus communis