Coloured scanning electron micrograph (SEM) of a sperm (blue) attempting to penetrate a human egg (orange). Actually, it takes a great number to weaken the outside of the egg enough for one to fertilize it.
☤ MD ☞ ☆☆☆ Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.
Beautiful coloured scanning electron micrograph (SEM) of the golgi apparatus of an olfactory bulb cell :) The Golgi apparatus consists of a stack of flattened interconnecting membranous sacs (L-shaped at centre). It is the site in the cell of synthesis of biochemicals. The biochemicals are packaged into swellings at the margins of the sacs which become pinched off as vesicles (pink and purple spheres). The Golgi apparatus also collects proteins and lipids made by endoplasmic reticulum (not…
Bdelloidea are microscopic aquatic animals that are related to roundworms, found in freshwater and moist soil. Interestingly, a male has never been observed within the species; females reproduce exclusively by parthenogenesis (without fertilization).
Nerve fibres. Coloured scanning electron micrograph (SEM) of fractured myelinated nerve fibres. The myelin sheath is green, the axoplasm is pink and the endoneurium (connective tissue) is blue. Magnification: x800 when printed at 10 centimetres wide.