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Giardia is not amused.

Giardia smiles back at you. Duodenum has C-shaped/cup-shaped organisms because cut on its side.

E. coli--part of the normal flora of the human gut. Certain strains of E. coli produce various toxins that cause illness

Cervical cancer cells. Wow.

"The diarrhea-causing protozoan Giardia has a suction cup-like structure on its ventral side that helps it stick onto the intestinal wall." From The Scientist

rotavirus causes severe diarrheal illness in infants and children

Developing nerve cells...

Image of Streptococcus, a type (genus) of spherical bacteria that can colonize the throat and back of the mouth. Stroptococci often occur in pairs or in chains, as shown here. Tina Carvalho, University of Hawaii at Manoa

Neisseria meningitidis is a Gram-negative diplococcus that is one of the most common causes of bacterial meningitis. Meningitis is an inflammation of the meninges that protect the brain and spinal cord that can be caused by bacteria and viruses. N. meningitidis is a significant cause of morbidity and mortality worldwide.

Cancer cell division. Each little bump is a small part of the cell trying to divide again...this is why cancer is "uncontrolled growth"

Primordial Quasar

SEM image of blood clot

A diatom chain by Charles Krebbs

Trypanosoma, a parasitic flagellated protozoan that causes trypanosomiasis (African sleeping sickness and Chagas disease). This trypanosome is a vector-borne parasite transmitted by Tsetse Flies (Glossina).

Streptococcus Bacteria.

HeLa cell dying, colored SEM. This cell appears spherical because it is undergoing apoptosis, or programmed cell death. Apoptosis occurs when a cell becomes old or damaged.

Mosquito Antenna

This is your brain on dopamine. Dopamine Neurons. (Source: CELLIMAGELIBRARY.ORG)

Dendrite Human Brain, microscope, cerebellum.

Trypanosoma brucei (African sleeping sickness)