This invention is directed to a method and apparatus using polymerase chain reaction (PCR) technology for collecting air samples and identifying biological agents in the air sample. The apparatus is capable of detecting transient events such as bacillus anthracis in a piece of mail being processed on...http://www.google.de/patents/US20040063198?utm_source=gb-gplus-sharePatent US20040063198 - Point source biological agent detection system
