When the t - shirt wearer and sniffer had very
different immune system genes from each other the t - shirts were rated as smelling very attractive or very sexy even.
Not exact matches
Instead, extra
genes picked up by some pathogens can cause
different strains to have wildly
different effects on the
immune system, even in the same person, researchers report January 11 in PLOS Pathogens.
Women prefer the smell of T - shirts worn by men whose major histocompatability complex
genes — which encode the proteins that make up an important part of our
immune system — are
different from their own, and vice versa.
It is surprising to find that a single
gene (ESRP), through its ancestral biological role (cell adherence and motility) has been used throughout the animal scale for very
different purposes: from the
immune system of an echinoderm to the lips, lungs or inner ears of humans,» states professor Jordi Garcia - Fernàndez, of the University of Barcelona's Department of Genetics, Microbiology and Statistics and the IBUB.
Scientists have suspected that, like cells in the
immune system, olfactory neurons diversify through recombination — that is, each cell randomly shuffles its DNA so it carries a slightly
different version of the same
gene.
Research from NC State shows how common
immune systems in microbes can be co-opted to turn
different genes off at will.
If the
genes undergo internal reshuffling, the proteins change and each generation of bacteria presents a
different appearance to the
immune system, as if the bacteria were changing clothes, or donning hats and dark glasses.
The first step in assessing our hypotheses will be to compare the Black - footed Ferret's genome with that of the domestic ferret in order to identify which
genes in the
immune system are
different.