William C. and Ruth Ann Dewel Microscopy Facility

Welcome to William C. and Ruth Ann Dewel - College of Arts & Sciences (Dewel-CAS) Microscopy Facility at Appalachian State University (ASU). We provide light microscopy, laser scanning confocal microscopy, and electron microscopy equipment and technical support to ASU and Appalachian Communities.

JEM-1400 S/TEM

News & Announcements

New Biology Research

Dr. Susan L Edwards investigates the role of Rhesus proteins in Agnathan fishes as a mechanism of ammonia excretion. (NSF IOS: 1121369)


Biology Research


TEM image of Vibrio cholerae, the causative agent of the devastating diarrheal disease cholera. The bacterium is a curved rod and is motile by means of its single polar flagellum. The sample was prepared and imaged by graduate student Brad Goforth, from Dr. Ece Karatan's lab....

Papilloma virus L1 capsid proteins

TEM image of the papilloma virus L1 capsid proteins. The sample is prepared by Dr. Charles Humphrey, CDC in Atlanta, GA and imaged by Dr. Guichuan Hou. A public health message from Dr. Humphrey about the papilloma virus L1 capsid proteins: “each 40 to 60nm particle in the image is made up of L1 capsid proteins that subsequently form the papilloma virus capsid shell.  We call...

The College of Arts & Sciences


112 Rankin Science South
572 Rivers Street
Boone, NC 28608-2027

Dr. Guichuan Hou

QEP Global Learning