allo-, all-

In immunology, describing material coming from a genetically distinct member of the same species: Allogeneic can be a serum, a tissue, or cells that have a different genetic constitution but belong to the same species.

1. In ecology, denoting a different nature or kind of something; allogeneic: An allogeneous species is the result of a change in the environment that displaces another species.
2. Denoting an ethnic group which has become established in a territory relatively recently: An allogeneic group can still retain ethnic and racial characteristics distinguishing it from the autochtheneous or indigenous population.

1. A reference to factors acting from outside the system, or of material transported into an area from outside: During surgery, allogenic blood was necessary in order to save the patient's life.
2. Having different sets of genes or differing in genotype: Allogenic organisms are genetically different and, at the same time, belong to the same species.

Reciprocal transformation of two mutants to the wild type: An allogenic transformation takes place by the action of a transforming principle to one mutant obtained from the other one.

Floras persisting from an earlier environment: Judy learned that an allogenous plants and their.components persevered or continued to thrive from a former ecological situation.

Growth or nourishment of one part or tissue at the expense of another part of the body; as in certain neoplasms: In the study of of food, allogotrophia can help in understanding nutrient spreading and its impact on cellular development.

In surgery, a transplantation of tissue obtained from another of the same species: An allograft consists of a tissue graft from a donor of one species to a recipient of the same species, but not genetically identical or related.

An allograft is a tissue graft taken from a genetically nonidentical donor of the same species as the recipient.

1. Writing, especially a signature, written by one person on another’s behalf: Because Mr. The allograph at the bottom of the document was made by Mr. Smith's best friend.
2. A letter or combination of letters that is one of a set that can be used to represent the same speech sound; a "phoneme": Examples of an allograph are “s”, “ss”, and “c” in English.

A descriptive reference to something written by one person on another’s behalf, especially, a signature: The allographic will written by Jim's lawyer, was kept in a very safe place.

Writing another individual's signature: An allograph can simply be the opposite of an autograph; that is, it is a person's words or signature, written down by someone else.

A behavior pattern in which an animal grooms the fur or skin of another animal of the same species: Allogrooming typically involve the grooming of offspring by a parent or of one gender by another one.

In optics, a phenomenon wherein passing plane polarized light through an optical substance produces two equal beams of circularly polarized light: Allogyric birefringence involves one right-handed polarised light andand the other left-handed, each having different velocities.

Relating to the condition of being immune to allogeneic antigens: The alloimmune tissue on Jim's leg, from a donar, provided him with some resistance against skin disorders..

Alternation of generations; an alternation between sexual and asexual phases in a life cycle: The occurrence of alloiogenesis can be exemplified in some kinds of flatworms.

A corneal transplant composed of a different substance than corneal tissue: such as, a synthetic plastic: The allokeratoplasty that Dr. Hill used for Jill's eye was made of acrylic.