Virus and spyware definitions are files that act like an encyclopedia of known malicious software, including viruses, spyware, and other potentially unwanted software.
Highly accurate DNA parental testing became available in the 1980s with the development of RFLP. In the 1990s, PCR, developed in 1983, became the standard method for DNA parental testing. A simpler, faster, and more accurate method of testing than RFLP, it has an exclusion rate of 99.99% or higher.
The campaign began accepting online donations on April 4, 2011, the day Obama announced his candidacy. In the first 24 hours after online donations began to be accepted, over 23,000 online donations of $200 or less were made. President Obama headlined his first campaign fundraiser in April 2011 in Chicago.