It seems that there's more variation in this gene in Asian populations.

I sometimes ponder on variation form and it seems to me it ought to be more restrained, purer.

The number one reason is fear. It's the fear of being found HIV-positive and the fear of dying. If you don't go to the doctor, you don't get the bad news. People living with the virus are not respected and are often feared. There's also the fear of treatment. They've heard some of the horror stories.

It seems that physical activity had an even more pronounced effect among those with the susceptibility gene apoe4, the most important risk factor for Alzheimer's disease and dementia.

He pretended to be a police officer that time. He seems to do what he has to, to get what he wants.

We must understand variation.