The immune system is a system of many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue.nflammation is one of the first responses of the immune system to infection. The symptoms of inflammation are redness, swelling, heat, and pain, which are caused by increased blood flow into tissue. Inflammation is produced by eicosanoids and cytokines, which are released by injured or infected cells.
Converting PST to EST. This time zone converter lets you visually and very quickly convert PST to EST and vice-versa. Simply mouse over the colored hour-tiles and glance at the hours selected by the column... and done! PST stands for Pacific Standard Time. EST is known as Eastern Standard Time. EST is 3 hours ahead of PST.
The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory. During daylight saving time, its time offset is UTCâ7 and is thus based on the mean solar time of the 105th meridian west of the Greenwich Observatory. In the United States and Canada, this time zone is generically called the Pacific Time Zone (PT). Specifically, it uses Pacific Standard Time (PST) when observing standard time (late autumn to early spring), and Pacific Daylight Time (PDT) when observing daylight saving time (early spring to late autumn).