General Structure of Viruses

Outside the cell the virus stays as inert particle known as virion. It can’t propagate in the environment. Virion is the extracellular form of virus existence. Virions are liberated from …

Read more

General Characteristics of Viruses

General Characteristics of Viruses General Characteristics of  most viruses demonstrate a number of common properties: molecular (non-cellular) structure. the viral genome represents only the one type of nucleic acid – …

Read more

Hemorrhagic Fever Diseases

A number of agents that infect the blood and lymphatics cause extreme fevers, some of which are accompanied by internal hemorrhaging. The diseases are grouped into the category of “hemorrhagic …

Read more

Infectious Mononucleosis | Overview

Infectious Mononucleosis | Overview This lymphatic system disease, which is often simply called “mono” or the “kissing disease,” can be caused by a number of bacteria or viruses, but the …

Read more

Lyme Disease| Overview

Lyme Disease| Overview In the 1970s, an enigmatic cluster of arthritis cases appeared in the town of Old Lyme, Connecticut. The phenomenon caught the attention of non professionals and professionals …

Read more

Plague| Overview

Plague| Overview The word plague conjures up visions of death and morbidity, unlike any other infectious disease. Although pandemics of plague have probably occurred since antiquity, the first one that …

Read more

Environmental Issues

Environmental Issues POLLUTION Pollution is any undesirable change in physical, chemical or biological characteristics of air, land, water or soil. This creates Environmental issues. The Agents that bring about such …

Read more