Menactra Vaccine Immunogenicity. Helps protect against 4 vaccineâpreventable serogroups1,2. Immunogenicity proven in clinical trials â confirmed in everyday use1. The immune responses to Menactra and Menomune-A/C/Y/W-135 vaccines were comparable for all 4 serogroups1,6.
The mediastinum is the middle section of the chest cavity. The chest cavity contains the left and right lungs, which lie on either side of the heart. The heart is contained in the portion of the chest known as the mediastinum.
The mediastinum is the central compartment of the thoracic cavity, the area inside the ribcage. It is surrounded by areolar connective tissue and contains all thoracic organs except for the lungs, including the heart and its great blood vessels, the esophagus and trachea, the phrenic and cardiac nerves, the thoracic duct, the thymus, and lymph nodes.