സെന്റ് മേരീസ് ജി എച്ച് എസ് ചൊവ്വന്നൂർ/അക്ഷരവൃക്ഷം/IMMUNITY

IMMUNITY      Immunity is the capability of multicellular organisms to resist harmful micro organism from entering it. Immunity involves both specific and nonspecific components.The nonspecific components act as barriers or eliminators of a wide range of pathogens irrespective of their antigenic make-up. Other components of the immune system adapt themselves to each new disease encountered and can generate pathogen-specific immunity. An immune system may contain innate and adaptive components. The innate system in mammalians,for example,is composed of vaccination. Both naturally and artificially acquired immunity can be further divided depending on whether the host built up immunity itself by antigen as 'active immunity' and last's long -term,sometimes lifelong. 'passive immunity is acquired through transfer (injection or infusion) of antibodies or activated T-cells from an immune host; it is short lived usually lasting only a few months.the immunity is divided into adaptive immunity and innate immunity. Adaptive immunity is divided into natural and artificial. Natural is divided into active(infection)and passive(maternal). Artificial is divided into passive antibody transfer and active immunization. Adaptive immunity can also be divided by the type of immune mediated by secreted antibodies, whereas cell-mediated immunity involves T-lymphocytes alone. Adaptive immunity can be also divided by the type of immune mediators involved. Humoral immunity is the aspect of immunity that is mediated by secreted where cell mediated immunity involves T-lymphocytes alone. ഹർഷ 10 A സെന്റ് മേരീസ് ജി എച്ച് എസ്‌ ചൊവ്വന്നൂർ ചാവക്കാട് ഉപജില്ല തൃശ്ശൂർ അക്ഷരവൃക്ഷം പദ്ധതി, 2020 ലേഖനം  സാങ്കേതിക പരിശോധന - Subhashthrissur തീയ്യതി: 19/ 04/ 2020 >> രചനാവിഭാഗം - ലേഖനം