89 results found

Search Results for: viral

Capsid

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

Pathogen

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

Naked virus

Viruses are infectious entities with size ranges between 20 to 400 nanometers. The mammoth-sized virus would be about the... Read More

Viral core proteins

viral core proteins proteins found mainly in icosahedral dNA and rNA viruses. They consist of proteins directly associated... Read More

Genome

Genome Definition What is a genome? As defined in biology, a genome is a complete set of deoxyribonucleic acid (DNA) within... Read More

Cell theory

What Is Cell Theory? Biological cell theory explains the idea of organismal constitution, structure, and function. It... Read More

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... 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

Symbiosis

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

Leukocyte

Leukocytes, also called the white blood cells (WBCs), inhabiting our immune system are the cells that exhibit astonishing... 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

Prodromal period

There are five stages (or phases) of a disease. (Hattis, 2020). These stages are (1) Incubation period, (2) Prodromal... Read More

Incubation period

Incubation Period Definition The incubation period is the time duration between exposure to the pathogen and the appearance... Read More

Opportunistic pathogen

Opportunistic Pathogen Definition How do we define opportunistic pathogen? The opportunistic pathogen is an infectious... Read More

Transfection

Definition noun (molecular biology) The process of deliberate introduction of nucleic acids into a recipient eukaryotic... Read More

Plaque assay

Definition noun An assay used for virus isolation and purification, and to determine viral titers. Supplement The plaque... Read More

Host cell

Host Cells Definition What is a host cell? A host cell is a living cell that serves as a shelter and a food source to 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

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Leukocytosis

What Is Leukocytosis? Leukocytosis is a condition wherein the number of White Blood Cells (WBCs) is increased above the... 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

Interferon

Interferon (Science: cytokine) a family of glycoproteins derived from human cells which normally has a role in fighting... Read More

Endoplasmic reticulum

Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... Read More

Dinoflagellate

A dinoflagellate is a flagellate algae characterized by their two flagella of unequal length. One of the flagella is lying... Read More

Monocyte

Monocytes Definition Monocytes are a subset of white blood cells (WBCs) or leukocytes that originate in the bone marrow.... Read More

Ribozyme

Definition noun, plural: ribozymes RNA molecule that acts as an enzyme in the aminotransferase activity of the ribosome and... Read More

DNA virus

Definition noun A virus containing DNA as its genetic material and using a DNA-dependent DNA polymerase during... Read More

Lysogenic cycle

Lysogenic cycle (Science: virology, microbiology) One of the ways of virus reproduction. ( other one:lytic... Read More

Density dependent factor

Density-dependent factors are the limiting factors of an ecosystem that regulate population growth in a density-dependent... Read More

RNA-dependent DNA polymerase

Definition noun A DNA polymerase enzyme that catalyzes the process of reverse transcription. Supplement This enzyme... Read More

Autocrine signaling

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

Hypotonic solution

Hypotonic Solution Definition What is a hypotonic solution? It refers to a solution that contains a lower amount of solute... Read More

Epistasis

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

Macular erythema

Macular erythema --> roseola (Science: paediatrics) also called baby measles. This is a nonserious but common childhood... Read More

Hemolysis

The breakdown or catabolism of red blood cells or erythrocytes that result in the expulsion of hemoglobin and other... Read More

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

Double stranded DNA virus

Definition noun Any of the viruses belonging to the Class I of Baltimore classification system characterized by having a... Read More

Body fluid

Body Fluids Definition What is body fluid? Literally, body fluid is the fluid of the body. The adult human body is ~50-60%... Read More

coronavirus COVID-19

Coronavirus Disease 2019 (COVID-19) Coronavirus Disease 2019 (COVID-19) is a contagious coronavirus disease first detected... Read More

Why Non-Human Primates Don’t Speak Like Humans

Summary: Why are non-human primates unable to speak like humans? A widely-accepted theory associated it with their lack of... Read More