students Logo
Home | Sitemap | Contact us | Search | Language
Left Right
  Home >> Molecular Biology Dictionary >> M13 Strand - Map


M13

A single-stranded DNA bacteriophage used as a vector for DNA sequencing.

M13 strand
The single-stranded DNA molecule that is present in the infective form of bacteriophage M13.

MAB
See monoclonal antibody.

Macerate
To disintegrate tissues to obtain a cell dissociation. Cutting,  soaking or enzymatic actions are commonly used.

Macrophages
Large, white blood cells that ingest foreign substances and display on their surfaces antigens produced from the foreign substances, to be recognized by other cell of the immune system.

Macropropagation
Production of plant clones from growing parts.

Magnetic field strength
The intensity of an externally applied magnetic field.

Magnetic flux density
the magnetic field produced in a substance by an external magnetic field.

Magnetic induction
See Magnetic Flux Density

Major histocompatibility antigen
A cell-surface macromolecule that allows the immune system to distinguish foreign or “non-self” from “self”. A better term is histoglobulin (See histocompatibility antigen). These are the antigens that must be matched between donors and recipients during organ and tissue transplants to prevent rejection.

Major histocompatibility complex
The large cluster of genes that encode the major histocompatibility antigens in mammals.

Malignant
Having the properties of cancerous growth.

Mammary glands
The milk-producing organs of female mammals, which provide food for the young.

Mammary tumours
Tumours of the milk glands.

Management of farm animal genetic resources
In AnGR: The sum total of technical, policy and logistical operations involved in understanding (characterization), using and developing (utilization), maintaining (conservation), accessing, and sharing the benefits of animal genetic resources. (Source: FAO, 1999)

Map
1. Verb: To determine the relative positions of loci on a DNA molecule. Linkage mapping is done by estimating the offspring of particular matings. The further apart two loci are on a chromosome, the greater will be the frequency of recombination between them up to a maximum of 50%, the situation observed when they are sufficiently far apart on a chromosome that recombinant gametes are as frequent as non-recombinant gametes, or when they are on different chromosomes. Physical mapping is usually performed by the use of in situ hybridisation of cloned DNA fragments to metaphase chromosomes.
2. Noun: A diagram showing the relative positions of, and distances between, loci.

Left Right