It is due to these limitations in the polysaccharide vaccines, the inconsistent responses of children to polysaccharide antigens and the differences between adult and child defence mechanisms and actions in response to these bacterium that led to the development of polysaccharide-protein conjugate vaccines.hese types of inactivated vaccines may be protein or polysaccharide based. âProtein-based vaccines may include toxoids (which is a form of inactivated bacterial toxin) and subunit or subvirion products.
Storage and Excretion of Wastes. After urine has been produced by the kidneys, it is transported through the ureters to the urinary bladder. The urinary bladder fills with urine and stores it until the body is ready for its excretion.
The cortex of the kidneys make the urine. This urine is collected in the pelvis, which empties into a tube (the ureter) that drains the urine into the bladder. From the bladder the urine is drained out of the body through a tube called the urethra. During pregnancy the placenta does most of this work for the baby. The baby's kidneys produce urine starting as early as the fifth week. Before the baby is born, the urine produced by the baby's kidneys adds to the amount of amniotic fluid surrounding the baby.