aborto (plantas)

La pérdida de un embrión o feto sea de forma espontánea (aborto involuntario) o inducida (cuando se termina un embarazo a propósito) antes de 20 semanas. Después de 20 semanas, la ...

aborto

الدين; كنيسة كاثوليكية

Interrupción voluntaria del embarazo al matar al feto. Un aborto directo, sea como fin o como medio, es gravemente contrario a la ley moral. La Iglesia sanciona con pena canónica ...

antihelmínticos

زراعة; زراعة عامة

Agents destructive to parasitic worms. They are used therapeutically in the treatment of infestation with parasitic worms of the helminth class, in humans and animal.

antígenos de superficie

زراعة; زراعة عامة

Antigens on surfaces of cells, including infectious or foreign cells or viruses. They are usually protein-containing groups on cell membranes or walls.

antígenos de neoplasias

زراعة; زراعة عامة

Proteins, glycoprotein, or lipoprotein moieties on surfaces of tumor cells that are usually identified by monoclonal antibodies. Many of these are of either embryonic or viral ...

antígenos de histocompatibilidad

زراعة; زراعة عامة

A group of antigens that includes both the major and minor histocompatibility antigens. The former are genetically determined by the major histocompatibility complex. They ...

antígeno nuclear de célula proliferativa

زراعة; زراعة عامة

Nuclear antigen with a role in DNA synthesis, DNA repair, and cell cycle progression. PCNA is required for the coordinated synthesis of both leading and lagging strands at the ...