Group-specific Component Content in Bloodstains.: An Ageing and Distribution Study

✍ Scribed by Gillian M. Horscroft; Sara A. Westwood

• Book ID: 104119552
• Publisher: Elsevier
• Year: 1986
• Tongue: English
• Weight: 428 KB
• Volume: 26
• Category: Article
• ISSN: 0015-7368
• DOI: 10.1016/s0015-7368(86)72495-x

✦ Synopsis

The content of group-specific component (Gc) in bloodstains, stored at room temperature, was examined using the Laurell rocket technique. The stains from eight donors were successfully tested over a period of 69 days. It was found that over this period, the level of Gc did not decrease. The Laurell rocket technique was also used to examine Gc in various sections of stains that had been prepared with liquid blood, plasma or serum diffusing into cloth from a single point. For plasma and serum the highest and lowest concentrations of Gc were found at the edge and centre of the stain respectively. Most bloodstains (86%) had either the same amount of Gc or more Gc at the edge than at the centre of the stain. Thus, Gc is a stable protein and as such is well-suited for forensic casework. However, its tendency to diffuse to the edge of a stain should be taken into account when areas of bloodstains are selected for analysis.