The immune system recognizes and destroys substances that contain antigens. Your body's cells have proteins that are antigens. These include a group of antigens called HLA antigens. Your immune system learns to see these antigens as normal and usually does not react against them.
Mother's Day 2016. Need to know the exact date of Mothers Day this year? Here's a chart that shows what day Mother's Day is celebrated from 2014 - 2021. In the US, Mother's Day is celebrated on the second Sunday in May. In the UK, mothers are honored the fourth Sunday of Lent. Check out our fun Mother's Day Games and Activities for teachers!
Home > Calendar > Holidays > Jamaica > Mother's Day. Motherâs Day is a day for many people to show their appreciation towards mothers and mother figures worldwide. It is an annual event but is held at different dates in the calendar, depending on the country. Flowers and other gifts are given to mothers on Mother's Day.