In order to undergo corneal graft rejection, three processes have been implicated . The donor antigen has to be released, recognized and transported to lymphoid tissue that is present in the form of the organized follicular con-junctival CALT, on the ocular surface itself and in the draining lymph nodes (afferent arm). Al-loantigens have to be processed so that a specific cellular immune response might be generated (central stage). Finally in the efferent arm cellular and humoral effector mechanisms are delivered to the graft and cause its destruction.
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Rosacea and Eczema are two skin conditions that are fairly commonly found throughout the world. Each of them is characterized by different features, and can be both discomfiting as well as result in undesirable appearance features. In a nutshell, theyre problems that many would want to deal with.