255 results found

Search Results for: host cells


Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More


Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with the nucleus. However, they are... Read More


Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More


Virulence definition In biology, virulence is defined as the degree by which a pathogenic organism can cause disease.... Read More


Definition noun The process of creating an exact copy of a biological unit (e.g. a DNA sequence, cell, or organism) from... Read More

Evolution of cooperation among tumor cells

Robert Axelrod*,, David E. Axelrod, and Kenneth J. Pienta *Gerald R. Ford School of Public Policy and Department of... Read More

Parameters affecting cellular invasion and escape from the parasitophorous vacuole by different infective forms of Trypanosoma cruzi

Parameters affecting cellular invasion and escape from the parasitophorous vacuole by different infective forms of... Read More

Does natural selection drive the evolution of cancer?

Emerging field sees cancer as an evolutionary and ecological process (PHILADELPHIA) - The dynamics of evolution are fully in... Read More

Obligate parasite

Definition noun, plural: obligate parasites A parasite that entirely depends upon a host for its nourishment,... Read More

Parasitic Worms "Read" The Body’s Immune Condition And Reproduce Accordingly

Parasitic Worms "Read" The Body's Immune Condition And Reproduce Accordingly Tiny parasitic worms that infect 250... Read More

Gladstone Investigators Discover How Resting T Cells Avoid HIV Infection

Scientists have discovered the mechanism that enables some CD4 T cells -- the main target of HIV -- to thwart the virus. The... Read More

NIAID scientists identify new cellular receptor for HIV

A cellular protein that helps guide immune cells to the gut has been newly identified as a target of HIV when the virus... Read More

Location, location — Cell sizes, lives influenced by host size

Species' sizes affect lives of cells in mammals Cells from the smallest to the largest of mammals often seem to be "one... Read More

Why Embryonic Stem Cell Use is Unethical

By Vicki Mozo Embryonic Stem Cell research offers a remarkable way to treat various disorders where conventional... Read More


Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

The sturdier sex? — Study by Pittsburgh scientists finds female stem cells work better

Female stem cells derived from muscle have a greater ability to regenerate skeletal muscle tissue than male cells, according... Read More

Common Allergy Drug Reduces Obesity And Diabetes In Mice

July 28, 2009 — Crack open the latest medical textbook to the chapter on type 2, or adult-onset, diabetes, and you'll be... Read More

Toxoplasmosis Infection Trick Revealed By Scientists

Scientists have provided new insight into how the parasite which causes toxoplasmosis invades human cells. Toxoplasmosis is... Read More

Living thing

Living Thing Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More

Natural anti-viral enzyme helps keep cancer cells alive, researchers find

DALLAS – Oct. 6, 2006 -- A molecule that cells normally use to fight viruses is also involved in keeping cancer cells... Read More

Embryonic stem cell differentiation: emergence of a new era in biology and medicine

REVIEW Embryonic stem cell differentiation: emergence of a new era in biology and medicine Gordon Keller1 Department of... Read More


Coccidia (singular: coccidium) are sporozoans that live as parasites of the digestive tracts of certain animals. The... Read More

Biologists see combined structure of cold virus and receptor molecule

WEST LAFAYETTE, Ind. - Biologists at Purdue University have determined the combined structure of a common-cold virus... Read More


Chloroplast Definition What is chloroplast? In biology, a chloroplast refers to the organelle found within the cell of... Read More

Mammalian cell invasion and intracellular trafficking by Trypanosoma cruzi infective forms

Mammalian cell invasion and intracellular trafficking by Trypanosoma cruzi infective forms Renato A. Mortara; Walter K.... Read More

How Toxoplasma Gondii Gets Noticed

January 19, 2009 — Researchers provide insight into how Toxoplasma gondii, a common parasite of people and other animals,... Read More

Scientists discover proteins involved in spread of HIV-1 infection

Bethesda, MD - An international team of researchers has identified a family of proteins that are involved in HIV-1 budding... Read More


Plant Definition (botany) Any of the eukaryotic organisms of the biological kingdom Plantae, characterized by being... Read More


A pseudopodium (plural: pseudopodia) refers to the temporary projection of the cytoplasm of a eukaryotic cell. Pseudopodia... Read More

Movie spies on malaria parasite’s sneaky behavior

Malaria has been outsmarting the human immune system for centuries. Now, using real-time imaging to track malaria... Read More

Mimicking Viruses May Provide New Way To Defeat Them

MADISON - Viruses, often able to outsmart many of the drugs designed to defeat them, may have met their match, according... Read More


Cancer definition In biology, cancer is defined as the malignant growth due to uncontrolled cell division. It is now used... Read More


Definition noun, plural: endoparasites (parasitology) A parasite that lives within the body of the... Read More


An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Molecule Does More Than Slice and Dice RNA

A team of Howard Hughes Medical Institute (HHMI) scientists has peeled back some of the mystery of how cells are able to... Read More

Mathematical Model Developed To Predict Immune Response To Influenza

Researchers at the University of Rochester have developed a mathematical model to predict immune responses to infection... Read More

Measles vaccine hesitancy leads to outbreaks, deaths of unvaccinated

Many people are afraid of getting measles vaccine these days. The fear arises from the allegedly adverse effects of it, such... Read More