Because an antibody is "made" relative to the antigen, but kept at low levels when you are exposed the first time ("primary immune response"). The second time you're exposed to the same antigen, memory cells recognize it and the body produces a high level of antibodies, and the level of antibodies usually remains higher for a longer time ("secondary immune response"). This is your basic immune response (primary and secondary).
This explains exactly why vaccines are effective to extremely effective.
Answer:
by their species or genus
Explanation:
Calcium
Vitamin D
Vitamin K
Phosphorus
vitamin C
The <u>Tunica Media</u> is mostly made up of smooth muscle tissue; generally the largest layer in arteries, the vessels most responsible for maintaining blood circulation and blood pressure.
Having a platelet count of 60,000/mirol is below the normal count of 150,000 which is called thrombocytopenia. With this low platelet count, our skin which is part of the integumentary system will show signs of Petechiae. Petechiae are formed and seen on the skin when capillaries underneath leaks blood due to low platelet count. Petechiae is commonly found on a person suffering from Dengue Hemorrhagic fever Disease where platelet count decreases.
