LST

LST may refer to several different concepts, depending on the context in which it is used. Below are some of the most common meanings of LST:

Landing Ship, Tank

Landing Ship, Tank (LST) is a class of naval vessel used during World War II, the Korean War, and the Vietnam War to support amphibious operations by carrying significant quantities of vehicles, cargo, and landing troops directly onto shore without the need for docks or piers. These ships were designed to transport and deploy tanks, vehicles, cargo, and troops directly onto enemy shores.

Design and Features

LSTs were designed with a large, flat bottom to allow them to beach themselves and unload directly onto the shore. They typically featured a large bow door and ramp for rapid unloading. The design also included a well deck that could be flooded to allow the launch of smaller landing craft.

Historical Significance

LSTs played a crucial role in several major amphibious operations, including the Normandy landings (D-Day) and the Invasion of Sicily. Their ability to deliver heavy equipment and troops directly to the battlefield was a significant factor in the success of these operations.

Local Standard Time

Local Standard Time (LST) refers to the standard time in a specific region or country, as opposed to Coordinated Universal Time (UTC). It is the time zone that is legally recognized and used for official purposes within that region.

Time Zones

Time zones are regions of the Earth that have the same standard time. They are usually defined by the offset from UTC. For example, Eastern Standard Time (EST) is UTC-5 hours.

Daylight Saving Time

In some regions, Local Standard Time is adjusted during part of the year to account for Daylight Saving Time (DST), which shifts the clock forward by one hour to extend evening daylight.

Lymphocyte Stimulation Test

The Lymphocyte Stimulation Test (LST) is a laboratory test used to assess the function of lymphocytes, a type of white blood cell that plays a crucial role in the immune system. This test measures the proliferation of lymphocytes in response to specific antigens or mitogens.

Clinical Applications

LST is used in the diagnosis of various immunodeficiency disorders, autoimmune diseases, and in monitoring the immune response in patients undergoing immunosuppressive therapy.

Procedure

The test involves isolating lymphocytes from a blood sample and exposing them to specific stimulants. The degree of lymphocyte proliferation is then measured, usually by incorporating a radioactive or fluorescent marker.

Related Pages

• Landing Ship, Tank
• Local Standard Time
• Lymphocyte Stimulation Test
• World War II
• Normandy landings
• Coordinated Universal Time
• Eastern Standard Time
• Daylight Saving Time
• Immune system
• Immunodeficiency disorder
• Autoimmune disease