Tangle analysis of Xer Recombination

Mamiko Arai

I will introduce the tangle analysis of Xer Recombination, which is worked 
by Mariel Vazquez, Sean D. Colloms, and De Witt Sumners. Tangle method has 
been used to analyze the configuration of DNA as well as how the enzyme 
acts on the circular DNA because electron micrographs of the enzyme-DNA 
complex do not show the enzyme clearly. In this paper, they prove that 
there are only three solutions to the tangle equations of the Xer 
recombination model under reasonable biological assumption. Three 
solutions correspond to different projection of a single same 3D image.  

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Within Host Models of Virus Dynamics

Lisa Soberano

Over 200 different viruses, one of which is rhinovirus, are known to
cause the common cold. Furthermore, at least 110 identified strains of
rhinovirus are responsible for about 35% of all adult colds.  We will
discuss a model, proposed by Wodarz and Lloyd, for the within host
dynamics of rhinovirus infection that incorporates an immune response to
the viral infection. A target cell limited model, proposed by Perelson,
will also be discussed. This model represents the acute virus dynamics
for infections such as influenza.  Behavior over time, as well as
strengths and weaknesses of the models will be discussed.