humans ... Researchers say they believe mosquitoes are showing a preference for human blood because deforestation and habitat loss have reduced the number of wild animals available for mosquitoes to feed on.
... increasing preference for human blood ... So why so much human blood? The researchers hypothesize that the Atlantic Forest’s changing environment has led these species to develop a taste for human blood.
... so small that it is invisible to the human eye ... "My sculpture is so small that it is the same size as a particle of talcum powder, a human blood cell, mould spores, bacteria and even a fog droplet.".