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arXiv 1204.0401math.PR
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一类两型细胞群体的宿主-寄生虫模型

A host-parasite model for a two-type cell population

Gerold Alsmeyer, Sören Gröttrup

摘要:

宿主-寄生虫模型被认为是一个细胞群体,可以是两种类型,A或B,并表现出单侧繁殖:虽然B细胞总是分裂成两个相同类型的细胞,但A细胞的两个子细胞可以是任何类型。描述细胞内寄生虫如何繁殖,然后共享到子细胞中的随机机制可以取决于宿主母细胞及其子细胞。该模型关注A细胞及其寄生虫的亚群,与Bansaye(2008)最近研究的单一类型模型不同,因为共享机制可能偏向于两种类型之一。主要结果与nonadherative的情况下,并提供信息的行为,作为$n\to\infty$,在第n代的A-寄生虫的数量和A-和B-细胞的相对比例在这一代主机给定数量的寄生虫。在(Bansaye,2008)中,证明将使用所谓的随机细胞系,当条件为A型时,其行为类似于随机环境中的分支过程。

英文摘要:

A host-parasite model is considered for a population of cells that can be of two types, A or B, and exhibits unilateral reproduction: while a B-cell always splits into two cells of the same type, the two daughter cells of an A-cell can be of any type. The random mechanism that describes how parasites within a cell multiply and are then shared into the daughter cells is allowed to depend on the hosting mother cell as well as its daughter cells. Focusing on the subpopulation of A-cells and its parasites, the model differs from the single-type model recently studied by Bansaye (2008) in that the sharing mechanism may be biased towards one of the two types. Main results are concerned with the nonextinctive case and provide information on the behavior, as $n\to\infty$, of the number A-parasites in generation n and the relative proportion of A- and B-cells in this generation which host a given number of parasites. As in (Bansaye,2008), proofs will make use of a so-called random cell line which, when conditioned to be of type A, behaves like a branching process in random environment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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