92 results found

Search Results for: infected

HSV-2- and HIV-1- permissive cell lines co-infected by HSV-2 and HIV-1 co-replicate HSV-2 and HIV-1 without production of HSV-2/HIV-1 pseudotype particles

Jérôme LeGoff1, Hicham Bouhlal1, Maxime Lecerf1, Christophe Klein2, Hakim Hocini1, Ali Si-Mohamed1, Martin Muggeridge3 and... Read More

Pathogen

What are Pathogens? Pathogens are defined as microscopic organisms, including viruses, bacteria, fungi, and parasites that... Read More

Reservoir host

Reservoir Host Definition A reservoir host is a host that harbors the pathogen and serves as a source of the infective... Read More

Parasitism

Organisms depend on different sources of food to survive. Larger organisms like plants make their own food (autotrophs) and... Read More

Microbe

Microbe Definition What is a microbe? How do we define microbes?  Microbes refer to microorganisms that cannot be seen by... Read More

Staphylococcus aureus

Definition Noun A gram-positive spherical and facultative bacterium arranged in cluster involved as pathogens of several... Read More

Definitive host

Different Biological Relationships The biological world is interconnected whether we notice it or not. All the life forms... Read More

Cytotoxic T cell

Definition noun, plural: cytotoxic T cells A T cell responsible for inducing death to target cells (e.g. infected somatic... Read More

Inoculation

Inoculation Definition In Immunology, inoculation is defined as the process of introducing an antigenic substance or... Read More

Plant Cell Defense

Hydrogen Peroxide Plants release hydrogen peroxide in response to the presence of a fungal invasion, which attacks by... Read More

Exudate

What is an exudate? The inflammation or injury in a tissue result in increased permeability of the blood vessels that... Read More

Tobacco mosaic virus

Definition noun, plural: tobacco mosaic viruses A mosaic virus belonging to genus Tobamovirus that causes mottling and... Read More

Antigen

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

Coccidia

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

Obligate parasite

Parasitism is a form of symbiosis that occurs between a parasite and its host. The parasite is the organism that generally... Read More

Zoonosis

Zoonosis Definition Zoonosis is an infectious disease that can be transmitted from an animal to a human host. Originally a... Read More

Prevalent

Prevalent Definition We can define "prevalent" as the most commonly found, being dominant or widespread, or describing the... Read More

Lytic cycle

Definition noun One of the two cycles of viral reproduction (the other being the lysogenic cycle), which is usually... Read More

Fibrinous exudate

What Is Fibrinous Exudate? Fibrinous exudate is a type of exudate (inflammatory fluid) that forms at the site of tissue... Read More

Biosecurity and Biocontrol

By: Maria Victoria Gonzaga In the previous lesson, we learned about the importance of modern science... Read More

Humoral immunity

Let’s get to know where one should place humoral immunity, the topic of today’s discussion!! By the end of the article,... Read More

Tapeworm

Definition noun, plural: tapeworms Any of the ribbon-like parasitic worms of the class Cestoda, characterized by possessing... Read More

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Epistasis

Epistasis Definition What is epistasis in genetics? How does epistasis occur? The epistasis definition, in biology, refers... Read More

Communicable disease

Definition noun, plural: communicable diseases A type of disease that is contagious since the agent of the disease may be... Read More

Capsid

Capsid Definition A capsid is a three-dimensional proteinaceous capsular shell around a virus that encloses the viral... Read More

Moraxella bovis

Definition Noun A gram-negative non-motile coccobacillus and highly opportunistic aerobic bacterium involved in Bovine... Read More

Peritoneum

What is the Peritoneum? The term peritoneum refers to the serous membrane that constitutes the biologically active inner... Read More

Growth and Plant Hormones

Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More

Toxoplasma gondii

Definition noun A parasitic protozoon of the taxonomic family Sarcocystidae that causes toxoplasmosis Supplement Toxoplasma... Read More

Cestode

Definition noun, plural: cestodes A common name for the species belonging to the class Cestoda Supplement Phylum... Read More

Hydrocalycosis

Hydrocalycosis a usually symptomless anomaly of the renal calix that is dilated from obstruction of the infundibulum;... Read More

Exflagellation

Exflagellation The extrusion of rapidly waving flagellum-like microgametes from microgametocytes; in the case of human... Read More

Contagious disease

Definition noun A disease in which the pathogen is transmissible from one host to another. Supplement A contagious disease... Read More

Biological Viruses

The prime directive of all organisms is to reproduce and survive and this also applies to viruses. Apparently, viruses are... Read More

Density dependent limiting factor

What Is A Density-Dependent Limiting Factor? Density-dependent limiting factors are limiting factors, which, depending on... Read More

Amoeba

Amoeba Definition The term amoeba, also spelled ameba, describes any cell exhibiting amoeboid movement. Amoeboid movement... Read More

Multiple alleles

Alleles are the pairs of genes occupying a specific spot called locus on a chromosome. Typically, there are only two alleles... Read More

Autocrine signaling

Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More

Artificial passive immunity

Definition noun A passive immunity acquired by means of injection of serum containing antibodies to an individual who may... Read More