From Big Medical Encyclopedia

ERITROGRAMMA (Greek erythros red + gramma record) — the result of distribution of erythrocytes on any sign (e.g., on diameter, a hemoglobin content, resistance of a membrane to action to - you or hypotonic solution) expressed as a percentage and (or) graphically.

AA. it can be used for the characteristic of an erythrocytopoiesis (see the Hemopoiesis) since in process of aging of an erythrocyte its diameter and resistance to the damaging influence change. So, increase in maintenance of young erythrocytes indicates the raised products by marrow of erythroidal cells, napr, in response to bleeding (see), hemolysis (see); increase in number of microcytes is observed at a hereditary microspherocytosis (see. Hemolitic anemia, Iron deficiency anemia), macrocytes — at megaloblastny anemias (see. Pernicious anemia), diseases of a liver and others patol. states.

One of types E. is acid E — the curve displaying dependence of intensity of the hemolysis caused by action of 0,002 N of solution salt to - you, from duration of influence of this solution. Is normal acid E. 45 — 50% of erythrocytes — in the next 1V2 — 2 min. are characterized by destruction of 20 — 25% of erythrocytes within the first 3 min.; at hemolitic anemias lengthening of time of hemolysis is noted.

See also Blood, Erythrocytes.

V. T. Morozova.