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EMSL Scientist’s PCR Detection of Mycoplasma is awarded a U.S. Patent.


Dr. Quanyi ‘Charlie’ Li co-invents an identification of cell culture contaminants among Mollicutes species utilizing a PCR based assay.

Cinnaminson, NJ

There are over 100 recognized species of the genus Mycoplasma. This genus of bacteria lacks a cell wall and are thus unaffected by many common antibiotics. Several species of the bacteria are pathogenic to humans including M. pneumonia which causes respiratory illness and M. genitalium which is believed to be related to cases of pelvic inflammatory diseases.

According to the New York Department of Health, “Mycoplasma infection is a respiratory illness caused by Mycoplasma pneumoniae, a microscopic organism related to bacteria. Anyone can get the disease, but it most often affects older children and young adults. Mycoplasma is spread through contact with droplets from the nose and throat of infected people especially when they cough and sneeze. Transmission is thought to require prolonged close contact with an infected person. Spread in families, schools and institutions occurs slowly. The contagious period is probably fewer than 10 days and occasionally longer.”

The research conducted by EMSL’s Dr. Li and three other co-inventors of a new polymerase chain reaction (PCR) technique is for the rapid detection of many mycoplasma species present in air and food sources, in addition to cell cultures in biotech companies and research laboratories.

“Dr. Li’s accomplishment in helping to achieve this patent is another example of how EMSL’s scientists have helped utilize the power of PCR testing to provide a safer environment for all of us,” stated EMSL Senior Vice President of Laboratory Services, Robert DeMalo. “Since there are no vaccines for the prevention of Mycoplasma, having the ability to quickly and accurately identify the organism using state–of-the-art DNA testing techniques is an invaluable tool for preventing its spread. We applaud Dr. Li’s latest accomplishment.”

To learn more about EMSL and their PCR and environmental testing services please visit, email or call (800) 220-3675.

About EMSL Analytical, Inc.
EMSL Analytical is a nationally recognized and locally focused provider of quality environmental and materials testing services and products to professionals and the general public. The company has an extensive list of accreditations from leading organizations as well as state and federal regulating bodies.


 PCR Detection Mycoplasma
 Mollicutes cell culture
 microscopic bacteria
 New York Health Dept
 respiratory illness

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