Origin of Blood Platelets

The Origin of Platelets

1. In heart-lung preparations perfused with heparinized blood, clumping of platelets and a sharp fall in the platelet count occurred in the first 5 to 15 minutes after the external circuit was established. 2. In 10 such preparations surviving from 1 to 4 hours, only one showed a return of the platelet count to the level existing before operation. 3. When platelets were reduced in numbers before...

Biochemistry of Blood Platelets

Due to the scope of the discipline, an annual survey of teratology must encompass a broad spectrum of findings from the bio-medical sciences. The first volume in this series does range topically in including reviews on aspects of cytogenetic, pharmacological, radiobiological, and immunological problems. If a field such as teratology is to be reviewed, one cannot expect a high degree of correspo...

To Blood Platelets

I ‘ HAS LONG BEEN KNOWN that blood platelets are isoantigenic.’ Serum isoantibodies reacting with platelets have been repeatedly demonstrated in 1)citieflts ‘ho have received multiple blood transfusions, and in multiparous vomen.’’4 The iiicidence of isoimmunity to blood platelets in niultitransfused iNitients has been studied mainly by the the anti-human globulin consumption,’2 the indirect Co...

The Blood Platelets

Platelets and Blood Cells

Wound healing is a complex response of the organism aiming to restore tissue integrity and organ function. In skin, vascular and inflammatory changes predominate for the first 3-5 days after wounding. The following granulation phase is characterized by new connective tissue production and re-epithelialization (1). In the mid-phase of cutaneous tissue repair, fibroblasts that have invaded the gr...