“You could see little parts of the human cell being broken off,” Ralston said of her very first encounter with the parasite.

The single-celled parasite Entamoeba histolytica infects 50 million people each year, killing nearly 70,000. Usually, this ...

Scientists led by Karla Satchell, Ph.D., the Anne Stewart Youmans Professor of Microbiology at Northwestern University, have ...