a ultrathin section of vegetal leaf mesophyll cells showing chloroplast structure

anatomy biology botany cell cells chlorophyll chloroplast crop cytoplasm discovery educational electron energy eukaryotes granum healthy lamellae leaf lipid membrane mesophyll microbiology micrograph microscope microscopy nature nucleus organelle photosynthesis physiology plant ribosome scheme science sclerenchyma section showing stroma structure thin thylakoid tobacco transmission ultra ultrathin vegetal