isäntäpuolustusta
Isäntäpuolustus, which translates to "host defense" or "inherent defense," is a concept in biology and immunology that describes the natural, non-specific defense mechanisms present in an organism from birth. This contrasts with acquired immunity, which develops over time through exposure to pathogens. Isäntäpuolustus encompasses a range of physical, chemical, and cellular barriers that work together to prevent the entry and spread of disease-causing agents.
Physical barriers include the skin and mucous membranes, which act as a formidable first line of defense.
Cellular components of isäntäpuolustus involve various types of white blood cells, such as phagocytes (macrophages and