Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
virus medical medicine science health disease structure biology infection microbiology human microbe cell molecular viral infectious microorganism rna microscope model sick virology symptoms antiviral colorful electron influenza flu microscopy germ closeup background hemagglutinin h1n1 protein render molecule avian system immune bacteria aids blood epidemic morphology huvirus humanvirus structure