Do you know the difference between these products? Here’s a quick summary of what they are and how they can save your horse’s ...

Toxin-antitoxin systems were discovered in the 1980s in connection with plasmids, or genetic material that moves between bacteria. Bacteria exchange this DNA in all manner of ways. Pili, hair-like ...

At Wilkes-Barre, Pa., two days before Christmas, Daniel Holuk, 5, choked to death when a yellowish leathery membrane plugged his windpipe. Diphtheria. George Washington choked to death in much the ...