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There are more nerve cells in one human brain than there are stars in the Milky Way.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Large-Flowered Trillium Large-Flowered Trillium
Nanotechnol in Biocellulose Nanofibers Schematic of Biosynthesis of Bacterial Synthesized Cellulose Nanotechnol in Biocellulose Nanofibers Schematic of Biosynthesis of Bacterial Synthesized Cellulose
Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma. Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma.
Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ... Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ...
Structure of the bacterial flagellar motor from Salmonella enterica Structure of the bacterial flagellar motor from Salmonella enterica
Bacterial growth methods Bacterial growth methods
Video: Parkinson's Disease

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