Is this in relation to those videos I sent you? The reason I sent those was because it does cover many aspects of that topic.

Anyway...

1. There is no safe dose of mercury, a proven neurotoxin. Trace amounts is still an amount.
2. When piggy backed with aluminium the chemical effect on those trace amounts is to amplify it by x1000
3. Testosterone increases mercury toxicity.
4. Some antibiotics increases mercury toxicity.
5. Environmental mercury, such as fish, must go through the bodies first line of defence, the stomach. Firstly, the mercury in fish is bonded to other proteins, so isn't in isolation. This alone would change its chemical effect. Secondly, because it is bonded to proteins and has to go through the gut that is full of acids, enzymes and bacteria that break things down it is not easily absorbed and the bulk (80% or more) of it is evacuated out through faeces and urine, most of the other >20% which would have been bonded to our own proteins in the gut is then processed by the body and excreted out of the hair and nails. Thirdly, exposure to environmental mercury is accumulative and you can control your level of exposure to a certain degree.
In comparison, 100% of the mercury contained within Thimerosal vaccinations is injected straight into the bloodstream along with things that increase its toxicity, it happens all at once and the is no barrier to control what and where it bonds, in fact the opposite, its given free access around the whole body.

Comparing Thimerosal and environmental mercury is like comparing rabbits and rats. Both might be rodents but you wouldn't say they were the same animal.