1 The Centers for Disease Control and Prevention (CDC) recommends 2 doses of quadrivalent meningococcal conjugate vaccine for adolescents 11 through 18 years of age.  The first dose should be given at 11 or 12 years of age, followed by a booster dose at age 16.
Figure- The synchrony between the three major system of human body. The major differences between hormones and neurotransmitters are as follows-. â¢ Neurotransmitters belong to the nervous system, whereas hormones belong to the endocrine system. â¢ Transmission of neurotransmitters is across the synaptic cleft, whereas that of hormones is by blood. â¢ Hormones are produced by endocrine glands while neurotransmitters are produced by neurons.
Difference between Estrogen, Testosterone and Progesterone. Estrogen functions as the primary sex hormone in women. This group of steroid composites is called so for their significance in the estrous cycle of women. These hormones help in the fertility of women and their ability to produce or have children. Testosterone on the other hand is the main steroid hormone of men. These testosterones come from the androgen group which is secreted in the testes of the male species, which are also used as anabolic steroids. Testosterone is present to almost all male species, both human and animals.