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A solution to the generalized birthday problem with application to allozyme screening for cell culture contamination

Published online by Cambridge University Press:  14 July 2016

M. H. Gail*
Affiliation:
National Cancer Institute, Bethesda, Maryland
G. H. Weiss*
Affiliation:
National Institutes of Health, Bethesda, Maryland
N. Mantel*
Affiliation:
George Washington University, Washington, D. C.
S. J. O'Brien*
Affiliation:
National Cancer Institute, Bethesda, Maryland
*
Postal address: National Cancer Institute, Landow Building, Room 5C-09, Bethesda MD 20014, U.S.A.
∗∗Postal address: Division of Computer Research and Technology, National Institutes of Health, Bethesda MD 20014, U.S.A.
∗∗∗Postal address: Biostatistics Center, George Washington University, Washington D.C. 20006, U.S.A. Research supported by Public Health Service Grant CA-15686 from the National Cancer Institute.
Postal address: National Cancer Institute, Landow Building, Room 5C-09, Bethesda MD 20014, U.S.A.

Abstract

This paper gives the probability that no common allozyme signature is found among n randomly selected cell culture lines when the s mutually exclusive and exhaustive signatures have arbitrary known probabilities. This result is useful in detecting cell culture contamination by a single cell line. This problem is a generalization of the classic problem of finding the probability of no common birthday among n individuals when it is assumed that each individual has a chance 1/s = 1/365 of a birthday on a given day. Both an exact recursive solution and an approximate solution are given for the general problem.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 1979 

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