prophase-the first stage of mitosis. mitosis-cell division in which the nucleus divides into nuclei containing the same number of chromosomes. phase of cell division-a stage in meiosis or mitosis.
The Chromebookâs security model means the antivirus industry is facing a new kind of PC more similar to the iPhone than a netbook, argues Perimeter E-Security chief technology officer Andrew Jaquith: a limited device with security inherent in its restrictions .
Get free virus protection with Microsoft Security Essentials. Microsoft Security Essentials is a free* product you can download to help defend computers running Windows Vista and Windows 7 against viruses, spyware, and other malicious software. Note: In Windows 8, Windows Defender replaces Microsoft Security Essentials.