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)
Time zone: EDT - Eastern Daylight Time. Current time zone offset: UTC/GMT -4. DST starts on 12 March 2017 and ends on 05 November 2017. Sunrise: 7:14 am. Sunset: 8:05 pm. USA country code is +1 and Chattanooga area code is 423. Chattanooga is located in EST - Eastern Standard Time zone and currently does not observe Daylight Saving Time. The sunrise was at 7:46 AM and the sunset will be at 5:55 PM. The main airport in Chattanooga is Chattanooga Metropolitan Airport (CHA) which is around 5 miles east of Chattanooga. Other Cities Located in EST - Eastern Standard Time Zone: Cape Dorset Coral Harbour Igloolik