To understand Castleman disease, it helps to know about the bodyâs lymph system. Lymphoid tissue, also known as lymphatic tissue, is the main part of the immune system. It is formed by different types of cells that work together to help the body fight infections.
Observation Systems International Program. Demography, the science of human population (or more specifically, the study of population structure. and processes), draws together research from a number of disciplines, including economics, sociology, geography, public health, and genetics. In addition to the environmental impacts of.
Human geography is a branch of geography that focuses on the study of patterns and processes that shape the human society. It encompasses the human, political, cultural, social, and economic aspects.eography (from Greek Î³ÎµÏÎ³ÏÎ±ÏÎ¯Î±, geographia, lit. earth description) is a field study of the lands, the features, the inhabitants, and the phenomena of Earth. A literal translation would be to describe or picture or write about the earth.