Erythrocytus
Erythrocytus  est cellula rubra sanguinis hominis ac animalium vertebratum, qui cellulis corporis oxygenium affert et dioxidum carbonis aufert. In avibus erythrocytis nucleus deest.

Proprietates erythrocytorum humanorm 

 Diametrum: circa 7.5 µm (micrometra) (7.5·10−6m)
 Crassitudo: 2 µm apud marginem et 1 µm in medio
 Densitas in sanguine: circa 4.5–5.5 Mio/mm3 (circa 5·106/µl = 5·106/mm3 = 5·1012/l = 5·1015/m3)
 in sanguine virorum: 4.6–6.2·109/ml; 14–18 g/100 ml oder 8.7–11.2 mmol/l
 in sanguine mulierum: 4.0–5.4·109/ml; 12–16 g/100 ml oder 7.4–9.9 mmol/l
 Numerus totalis: 24–30 billioni = 24–30·1012
 Tempus in quo erythrocyti ad maturitatem perveniunt: circa 7 dies
 Vita media: circiter 120 dies aut 4 menses
 Erythrocyti a corpore creati: circa 1 %/dies = circa 200 milliardi/dies = circa 2 millioni/secundus
 Superficies plena: 4000–4500 m2

Morbi 

 Anaemiae
 Polyglobulia 
 Polycythaemia vera
 Polycythaemia rubra hypertonica
 Polyglobulia neonatorum ;
 Anaemia cellularum falciformium
 Thalassaemia
 Favismus

Notae 

 Agglutinatio
 Erythropoietinum
 Haematopoiesis
 Leucocytos
 Thrombocytos

Vasa sanguinea