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Rule of thumb for time it takes a metabolite (lactate) to diffuse across the cell

Value	0.1 sec
Organism	Human Homo sapiens
Reference	Calculated according to intestinal cell diameter. Please see Measurement Method
Method	Taking X, distance to be traveled, as diameter of intestinal cell, 10µm and D of lactate in cytoplasm of erythrocyte in rat, 210 µm^2/sec BNID 104644. According to equation of diffusion (in 3 dimensions): t diffusion=X^2/(6×D). (10µm)^2/1260µm^2/sec=0.079sec˜0.1sec.
Entered by	Uri M
ID	104676