gsc international

pine (gymnosperms) stem; showing xylem and tracheides; longitudinal section

leaf composite; showing hydrophytic, mesophytic, and xerophytic leaves; cross section

mixed pollen comparison; typical dicot pollens; whole-mount

density rod, aluminum, set of 12

escherichia coli; smear; gram-negative

pumpkin (cucurbita) stem; typical dicot stem; cross section and longitudinal section

tick (arachnid); whole-mount

slide , ascaris lumbricoides, male and female; cross section

planaria, general structures; whole-mount

lichen (thallus surrounded by fungal hyphae); section

puccinia graminis uredinia (basidiomycetes); section

umbilical cord, mammalian; example of simple cuboidal epithelium; section

mitochondria, from zea maiz or onion epidermis; section

microscope slide of zea mays (corn) stem; cross section

cellular nucleus, from plant cells; section

reptile blood; smear

basswood (tilia) older stem; cross section

basswood (tilia) three year old stem; showing progression of rings formation; cross section

chromosomes, drosophila melanogaster; smear from salivary glands

compact bone, decalcified preparation; cross section and longitudinal section