See Also: Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
fortification(dictionary)
fortification(dictionary)
fortification(encyclopedia)
fortification figures(medicine)
fortification spectrum(medicine)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
DT immunization(health)
Immunization(money)

immunization, secondary (medicine) and fortification (sh)


immunization, secondary (medicine)


immunization, secondary


Any immunization following a primary immunization and involving exposure to the same or a closely related antigen.


fortification (sh)




Structure erected to strengthen a military position against attack.

The defense of cities and trade centers, usually by high walls, has been important for centuries. The citadel was the fortress of the ancient world, appearing in cities of Egypt, Greece, and the Roman empire. By Classical Greek times, fortress architecture began incorporating ramparts (walled embankments) and towers. Roman fortresses of the 2nd century tended to be square or rectangular, and were usually of dressed (cut) stone. The medieval castle remained almost impregnable until gunpowder came into use.