The immune system consists of a finely orchestrated, complex collection of tissues and cells that protect your body from allergens, bacteria, viruses, and other potentially harmful organisms, collectively known as antigens. Skin and the membranes that line entrances to the body -- nasal passages, eyes, and respiratory and digestive tracts -- are the first line of defense, providing a physical barrier against invaders. Internally, specialized white blood cells fight antigens that make it past the skin: T-lymphocytes continuously patrol the body in search of antigens; B-lymphocytes manufacture antibodies, special blood proteins that neutralize or destroy germs; and neutrophils and macrophages scavenge antigens from the blood for delivery to the lymphatic system, which disposes of them. To work smoothly, these cells depend on you feeding them....this is what your immune cells need.

selenium which helps white blood cells produce the proteins they need to clear out viruses. 

zinc (pumpkin seeds)which is important in the development of white blood cells. - See more at: http://www.sunwarrior.com/news/immune-boosting-foods/#sthash.5pdCQkzR.dpuf

vitamin A, a component of healthy skin. The skin is the first line of defense against infection. Vitamin A is also important to T-Cells and natural killer cells. - See more at: http://www.sunwarrior.com/news/immune-boosting-foods/#sthash.5pdCQkzR.dpuf

glutamine, an amino acid that is used by immune cells during times of stress, inflammation, and infection, especially by lymphocytes, macrophages, and neutrophils. - See more at: http://www.sunwarrior.com/news/immune-boosting-foods/#sthash.5pdCQkzR.dpuf

glutathione, an antioxidant that strengthens the immune system. - See more at: http://www.sunwarrior.com/news/immune-boosting-foods/#sthash.5pdCQkzR.dpuf

allicin, which fights bacterial infections and cancer - See more at: http://www.sunwarrior.com/news/immune-boosting-foods/#sthash.5pdCQkzR.dpuf

Lentinan, a type of beta glucan found in shiitake mushrooms, is believed to reduce tumor activity and lessen the side effects of cancer treatment.5 Researchers at Teikyo University’s Biotechnology Research Center in Kawasaki, Japan, showed that lentinan has anti-tumor properties, suppressing the formation and development of tumors.

beta glucan (PGG glucan) that enhances the function of macrophages and neutrophils. Researchers looked at beta glucan’s ability to work in partnership with antibiotics to decrease mortality of the rats. “Results of these studies demonstrated that prophylaxis with PGG glucan in combination with antibiotics provided enhanced protection against lethal challenge with Escherichia coli or Staphylococcus aureus as compared with the use of antibiotics alone,”