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New correction is derived to the velocity of geometrating molecules in gel. The formalism takes into account the random character of the gel medium. The correction comes from the possibility of two simultaneous hookings of a molecule at gel fibres. The calculated velocity is shown to be inversely proportional to 1+3ξ/4+ξ 2 /3, where ξ=s/b, s is the molecule length and b is a mean free path...
The cellular dynamics of HIV interaction with the immune system is explored in three-dimensions using a direct Monte Carlo simulation. Viral mutation with probability, P mut , is considered with immobile and mobile cells. With immobile cells, the viral population becomes larger than that of the helper cells beyond a latency period T crit and above a mutation threshold P crit ...
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