mineralica wrote...
Bacteria could do this trick (they have own metabolysm), virii... Unlikely - they're only NA and protein. Only if virii contain a genes that could tell cells to synthesize required products, which can easily be replaced by normal genetic therapy.
I was being a bit obtuse in my definitions, yes. Thanks.
However, their genetic product could've also acted as a catalyst, or bacteria could've been symbiotic.
In first case, Quarians would be dead without any infection. In second - again, genetic therapy. And how immune system can't recognise friend or foe when it products response (allergy) on everything that moves?
They wouldn't be dead, they'd just be very weak. If their immune systems partially relied on infectious diseases to fend off other infectious diseases, not having the beneficial half would leave them much more vulnerable. Not incapable, just vulnerable.
She just likens it an immune response, though. There's no direct analogy, since the basic biology is different. At its simplest, allergies are overreactions due to protein interactions. If a Quarian contracts a disease, their immune system might go into overdrive trying to figure out if it's beneficial or not. Parts of the immune system could accept the infection, others might fend it off.
No, it's not stated about the single type of amino acids on Rannoch, but Tali says she won't get a chickenpox if she'll even get that virus. So either transmutase doesn't exist or mutated virii don't have the same effect than original ones on original host, so environment is dangerous because of allergy, not because of real risk to get sickness.
Again - if the risk is because of allergic reaction, why immuno boosters are needed?
Another possibility is that their original symbiotic diseases simply went haywire without competition from their natural environment. If the microbial population went out of balance, and the symbiotic disease has partial control over Quarian nervous systems, introduction of new bacteria or virii could cause a dual-response. One from the symbiote, one from the Quarian, and each could elicit a different mechanism to contend with the disease. Fever by the Quarian, mucus by the bacteria.
If the bacteria elicits more of the negative side-effects, immuno-boosters could offset the worst of it by giving the Quarian-controlled immune system a faster attack vector, or more efficient attack vector so that the bacteria-symbiote doesn't have much to attack.
Of course, everything is speculatory. It's a fictional biology. Asking why the Quarians need immuno boosters or what their true relationship with their infections are might be asking things like, "Why do humans need 4 fingers," and "Why don't humans lick cow butts?"