The blood is gratis

Blade forms an uneasy alliance with the vampire council in order to combat the Reapers, who are feeding on vampires.

David Goyer talks about the genesis of 'Blade II' and Guillermo del Toro's involvement.

Is it necessary to understand the moral concepts of solidarity and generosity linked with donating blood? Is it possible to show the crudely impersonal world of specialized medicine? An explanation of what blood is, what it is for, and how it is used.