rapeseed flower bud halve, brassica napus, cross section, 20x micrograph

20x anatomy angiosperm biology botanical botany brassica bud c cell cells cross cs cytology flower halve histology isolated layer light magnification magnified microanatomy microbiology micrograph microscope microscopy microsection napus oilseed petal photomicrograph plant rape rapeseed s sample science sectioned slide specimen stained visual