1) blood brain barrier in our CNS.
2) indl cell nucleus, where you have 23 pairs of chromosomes and 35K genes on them in total.
3) And there are zillions of killer cells in human immune system whose main functions are to defend the body first. Their functional directives are inside the genes of a particular kind.
4) How many generations can you remember to give an accurate account about illnesses and infections that might have occured in all human beings? Not even in your own family members accurately.
5) genes go thru degradation by age and time. Our genes are all recycled products from past Karma! LOL:)
Period.
If anything and every organism or toxic chemical can affect your body system, then you could have been dead by now! You don't know what you are talking about Stacie. Make a list of all the viral names, fungi and bacteria and their mutant variants first. You will see thousands and thousands of known and unknwon organisms that live along w human beings and other living organisms in a symbiotic relationships. Not all of them are harmful to human beings. Not every virus or toxic chemical can affect every human being.
As soon as the sperm enters the human uterus, the body sets its defense mechanism. So start from there or earlier for your investigations about immune system genes and how they handle antigens from both internal and external sources.
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