Microparasites

Microparasites
(Science: epidemiology) Typically, viruses, bacteria, fungi and protozoa. More generally, parasites that multiply within their definitive hosts. Microparasites are characterized by small size, short generation times, and a tendency to induce immunity to re-infection in those hosts that survive. The duration of infection is usually short in relation to the lifespan of the host, but there are important exceptions, such as the slow viruses. The key epidemiological variable, by contrast with macroparasites, is whether or not the individual host is infected.

The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

Flowers and tiny fruits of the pomegranate plant

Fruits, Flowers, and Seeds

This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..

Muscle

Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..

"Cronopio dentiacutus", a prehistoric mammal (an illustration)

Mammalian Ancestors

Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

Still Freshwater & Plants

Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

Chemical Composition of the Body

The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..