Norwalk Virus (Norovirus)- An Overview

Structure and Genome of Norwalk Virus

Structure of Norwalk Virus (Norovirus) The virus is non-enveloped, round, 27-nm particles with a ‘ragged’ outer edge but lacking a definite surface structure. It has a buoyant density of 1.33–1.41 g/cm3, an inability to propagate in vitro. Characteristically, Norwalk virus possesses … Read more

Dengue and Dengue Virus- An Overview

Dengue and Dengue Virus

What is Dengue and Dengue Virus? Dengue is a mosquito-borne infection caused by a single-stranded RNA virus belonging to the Flaviviridae family known as the Dengue virus (DENV). It is transmitted by different species of female Aedes mosquito, primarily Aedes … Read more

Acinetobacter baumannii- An Overview

Acinetobacter baumannii

Habitat of Acinetobacter baumannii The first Acinetobacter found in soil was discovered in 1911 by M.W. Beijerinck. It is associated with the aquatics environment. It has been recovered from soil, water, animals, and humans. Found in the respiratory and oropharynx secretions … Read more

Lymphocytes- Types and Functions

Lymphocytes- Types and Functions

Lymphocytes are the cells that specifically recognize and respond to foreign antigens and are mediators of humoral and cellular immunity. Lymphocytes, the unique cells of adaptive immunity, are the only cells in the body that express clonally distributed antigen receptors, … Read more

Macrophages- Introductions and Functions

Macrophages- Introductions and Functions

Macrophages The mononuclear phagocytic system consists of monocytes circulating in the blood and macrophages in the tissues. The monocyte is considered a leukocyte in transit through the blood, which becomes a macrophage when fixed in a tissue. Monocytes and macrophages … Read more