A device for collection of DNA-containing materials is provided and a method of preventing DNA specimen contamination is provided which prevents extraneous DNA found in DNA evidence collection kits from interfering with DNA specimen analysis, further a device an method is provided for collecting the...http://www.google.com.hk/patents/US20030113906?utm_source=gb-gplus-share專利 US20030113906 - Method and apparatus for DNA collection
