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PubMed · 7172609

Microcomputer data handling for the Phoenix system.

J C Ardern·E Herod·K Hyde·A Urmston·J E MacIver
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Abstract

A modified Phoenix data processing system has been introduced into the laboratories at the Manchester Royal Infirmary. Specifications for the design and installation of microcomputers to link automated instruments to this host computer are described. The operation and data manipulation facilities of the microcomputer are included. It is concluded that these devices aid the management of data within the department and improve the quality of service.

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J C Ardern, E Herod, K Hyde, A Urmston, J E MacIver. 1982. Microcomputer data handling for the Phoenix system.. https://doi.org/10.1111/j.1365-2257.1982.tb00079.x

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An examination of different Percoll density gradients and magnetic activated cell sorting (MACS) for the enrichment of fetal erythroblasts from maternal blood.

OBJECTIVE: To increase the yield of fetal erythroblasts from the blood of pregnant women by optimising and simplifying the enrichment procedure. METHODS: By using an experimental system whereby cord blood was mixed with normal adult blood, we evaluated the recovery of fetal erythroblasts using different single or double percoll density gradients with or without subsequent enrichment by Magnetic Activated Cell Sorting (MACS). RESULTS: The recovery of erythroblasts on single density gradients increased from 3%-68% of the input erythroblasts with an increase in the density of percoll from 1075 g/l-1098 g/l. Although the use of a double density gradient did eliminate most lymphocytes, it was accompanied by a significant loss of erythroblasts. The combination with MACS enrichment, however, lead to a almost 200 fold increase in the purity of erythroblasts. CONCLUSIONS: Erythroblasts are preferentially retained by higher density gradients. To enhance their purity a subsequent more specific enrichment step, such as MACS is advisable.

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