Avian flu virus (gold) inside of bird cells
Whole flea
Aphid feeding on leaf
Bacterial infection attached to cell membrane
Eye of a fly
Daphnia (water flea)
Secretory vesicles coming off of golgi apparatus
Protist (unicellular animal) ingesting a bacterium
Mitochondria
Muscle fibers
Tick feeding on skin of dog
Bacteria
Virus capsids
Arteries and blood cells
Bacteria
Fish gill
Lining of dog ureter (tube from bladder to outside)
Virus particles
Head of a flea
Nuclear membrane and associated organelles
Stomates under a leaf (cells that allow water in and out of leaf)
Pollen from variety of plants
Stem of a plant
Dust mite found on skin