lily pollen, red stained pollen grains, whole mount, 80x light micrograph

lily pollen grain grains lily pollen micrograph microscope photomicrograph lilium flower red stained fine coarse powder powdery substance mount specimen wm entire light light stain 80x magnified magnification detail close-up plant histology microanatomy sample microscopy microsection slide micro botany botanical biology microbiology science research education isolated cut white background