Survival equations for red blood cells with statistical distributions in life spans.

The survival equations for labelled RBCs taking into account a hypothetical Gaussian (or binomial) statistical distribution for the life spans, with and without random destruction, have been derived in this paper. The numerical integration of these equations emphasises some particularities which will result from the existence of broad life span distributions. The differences between the results obtained with hypothetical populations of RBCs having statistical distributions for the life spans and hypothetical populations of RBCs with life spans equal to the distributions mean value for every cell are also discussed.