Would you accept or reject a cure found for cancer/aids if found by human torture experiments

So to do some explaining, vegans get a bit of flack for opposing medical research that involves animals on the basis of ethics. A question often posed to them is whether they would accept/reject a cure if a few animals had to die for millions of humans to be saved (unrealistic scienctifial expectations). Many people think it is sickening that some vegans would condemn millions of people to death by rejecting the cure because eg 15 primates was forcibly induced with a disease & tested upon & then euthanised.

So i got 3 questions
1) what is your initial reaction to the vegan that says ''no i refuse to accept that finding a cure for (aids) is morally justified by forcing animals who will experience pain/fear etc into experiments''
2) To turn the situation around, if a disease (eg aids) was discovered by some experimentation that replaced 15 animals with 15 humans, would you accept/reject the cure? & why
3) Has your view on the vegan rejecting the cure changed? & if not why?

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In short this question is asking how animal experimentation can be justified by ''the end result justifies the means used'', yet when applied to humans it kicks up a s*itstorm despite the Nazi-experimentations on human subjects contributing a fair amount of knowledge & us not rejecting this knowledge based on how it was found

1. Morally, I would also oppose to such cruelty involving the infliction of pain and fear to either animals or humans. It should never be morally justified.
2. While I wouldn't advocate the use of inhumane means in experimentation, if somehow a cure has been discovered in the process, I would have no qualms about using the discovery to benefit those who presently are in need of the discovered cure.
3. My view stands the same. I would still oppose the procedure as morally unjustified.

However, the end results, whether attained justifiably or not will not alter the fact that it is of benefit and rejecting its use is not of any value when it is already proven to work. If the only way to obtain the end result is through persecution or inhumane action in the future, then, that is not justifiable unless a new way can be found to accomplish that.

I wouldn't want the lives that were already lost, to be lost in vain. If something already happened, we can't stop it. IT would be torture to a patient and the patient's family to die when there is a cure available. In that situation, refusing the treatment would be suicide. I doubt anyone would die becuase they don't agree with experiment methods.