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African trypanosomes are parasites that are able to escape the immune responses of its host animal through a range of mechanisms. Its most prevalent mechanism is its ability to evade recognition by antibodies through antigenic variation.
Atmospheric escape is the loss of planetary atmospheric gases to outer space.A number of different mechanisms can be responsible for atmospheric escape; these processes can be divided into thermal escape, non-thermal (or suprathermal) escape, and impact erosion.
Escape response in Antarctic krill.. Escape response, escape reaction, or escape behavior is a mechanism by which animals avoid potential predation.It consists of a rapid sequence of movements, or lack of movement, that position the animal in such a way that allows it to hide, freeze, or flee from the supposed predator.
Antigenic variation or antigenic alteration refers to the mechanism by which an infectious agent such as a protozoan, bacterium or virus alters the proteins or carbohydrates on its surface and thus avoids a host immune response, making it one of the mechanisms of antigenic escape. It is related to phase variation. Antigenic variation not only ...
For organisms other than plants, examples of defense mechanisms allowing for escape include camouflage, aposematism, [6] heightened senses and physical capabilities, and even defensive behaviors such as feigning death. An example of an organism using one of these defense mechanisms is the granular poison frog which defends itself through ...
Operation is mechanically similar to the verge escapement, and it has two of the verge's disadvantages: (1) The pendulum is constantly being pushed by an escape wheel tooth throughout its cycle, and is never allowed to swing freely, which disturbs its isochronism, and (2) it is a recoil escapement; the anchor pushes the escape wheel backward ...
It has been speculated that the ancestral escape mechanism was most likely a backwards jump due to the simultaneous protraction of the legs driven by the ancestors of the Giant Fibers. This behavior was probably similar to the escape system found in a mantis shrimp called Squilla that diverged from the crayfish lineage very early on. It is ...
In atmospheric science, hydrodynamic escape refers to a thermal atmospheric escape mechanism that can lead to the escape of heavier atoms of a planetary atmosphere through numerous collisions with lighter atoms, typically hydrogen. This mechanism may explain why some planetary atmospheres are depleted in oxygen, nitrogen, and heavier noble ...