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Schnee

Farbige Animation
An animation of a typical human red blood cell cycle in the circulatory system. This animation occurs at real time (20 seconds of cycle) and shows the red blood cell deform as it enters capillaries, as well as changing color as it alternates in states of oxygenation along the circulatory system.
CC BY-Rogeriopfm SA 3.0
https://creativecommons.org/licenses/by-sa/3.0/deed.en

CC BY-Rogeriopfm SA 3.0
https://creativecommons.org/licenses/by-sa/3.0/deed.en

Schnee

Farbabbildung

Self made ophtalmogram of the retina of the right eye. It shows the optic disc as a bright area on the right (nasal side) where blood vessels converge. The spot to the left (temporal side) of the centre is the macula. The grey, more diffuse spot in the centre is a shadow artifact.

(CC BY-Ske. SA 3.0
https://creativecommons.org/licenses/by-sa/3.0/deed.en

babure

Querschnitt durch eine große menschliche Arterie. Trichromfärbung nach Masson-Goldner, Objektiv 56x: (1) Lumen mit einigen Erythrozyten, (2) Tunica intima, (3) Membrana elastica interna, (4) Tunica media, (5) Membrana elastica externa, (6) Tunica adventitia/externa