Sem (page 4)

Pollen on Pistil of Cosmos Anonymous

Otoliths from the Inner Ear of a Rabbit Anonymous

Proboscis Tip of a Swallowtail Butterfly Anonymous

Pistil of Epiphyllum Cactus Anonymous

Watch Gears Anonymous

Fingernail Anonymous

Pistil of Potentilla Plant Anonymous

Sperm in Testis of a Rat Anonymous

Pollen on Pistil of Narcissus Anonymous

Pollen on Pistil of Mallow Anonymous

Proboscis Tip of a Swallowtail Butterfly Anonymous

Blood Vessel Cast of the Duodenum of a Rat Anonymous

Human Skin Anonymous

Blood Vessel Cast of Connective Tissue of a Rat Anonymous

Setae on Gecko Foot Anonymous

Blood Vessel Cast from Rat Pancreas Anonymous

Pistil of Crab Cactus Anonymous

Bone tissue of a hen magnified x25 Anonymous

Coagulated Red Blood Cells Anonymous

Human Red Blood Cells Anonymous

Sperm in Testis of a Rat Anonymous

Core of Mechanical Pencil Anonymous

Trachea of a Rat Anonymous

Stomata on Rice Plant Leaf Anonymous

Blood Vessel Cast from Rat Colon Anonymous

Duodenum Villi from a Rat Anonymous

Table Salt Anonymous

Pleat on Interior of Oviduct of a Rabbit Anonymous

Seed Heads of Epiphyllum Cactus Anonymous

Seed Heads of an Epiphyllum Cactus Anonymous

Trachea of a Rat Anonymous

Sensory Hairs on a Moth Antenna Anonymous

Stamen on Spider Lily Anonymous

Blood Vessel Cast of the Duodenum of a Rat Anonymous

Snail Teeth Anonymous

Trachea of a Rat Anonymous