The immune system protects the body from invading disease-causing organisms, or pathogens. Pathogens and other non-self molecules are antigens  foreign molecules recognized by the immune system, stimulating an immune response.The majority of infections by pathogens occurs in mucous membranes of our body.athogens and other non-self molecules are antigens  foreign molecules recognized by the immune system, stimulating an immune response. The majority of infections by pathogens occurs in mucous membranes of our body.
Alabama USA. Alabama , state in the south-eastern United States. Alabama is bordered by Tennessee (N), Georgia (E), Florida and the Gulf of Mexico (S), and Mississippi (W). Alabama is in the Central Time Zone in the United States of America (USA). US Central Standard Time (CST) is 6 hours behind Greenwich Mean Time (GMT-6) Current time now in Time Zone: America Chicago (USA Central Time)
Alabama Area Codes. Area Codes in Alabama-Below are all the area codes in Alabama. Clicking on an area code will show the cities in that area code. 205 251 256 334.