Questions on Daltons and ELISA

[Donald Chun Kit Wong]

I have two question. First, can anyone tell me the relationship between 
daltons and grams. Can one calculate one from the other?

Second, when coating a plastic microtiter plate with antibodies, will 
only the Fc portion of the antibody bind to the plate, or only the F(ab) 
portion, or all parts of the antibody equally? Illustrations from 
companies, texts and review articles always show only the antibodies 
bound by the Fc portion. But never mention if other portions of the 
antibody can bind also.

Thanks.

Donald Wong
University of British Columbia
Vancouver, Canada