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)
Current local time in Birmingham, Jefferson County, Alabama, USA, Central Time Zone. Check official timezones, exact actual time and daylight savings time conversion dates in 2017 for Birmingham, AL, United States of America - fall time change 2017 - DST to Central Standard Time.