Tritiated thymidine was injected into normal rats at 6-hour intervals for 5.5 days, and the labelling of blood monocytes was recorded. Monocytes were identified on the basis of their cytochemical lysozyme activity, demonstrated by lysis of bacteria around the cells. No labelled monocytes were found one hour after the first injection, but a few labelled lysozyme-negative mononuclear blood cells were seen. 58% of the monocytes were labelled on the first day and 100% on the fourth day. Both unlabelled and heavily labelled monocytes left the circulation at random with a half-time of 12–13 h. The grain count data suggest that monocytes are the progeny of at least 2 succeeding precursor cells with generation times not exceeding 1.6 days and that part of the monocytes stay in a storage pool before being released into the blood.

This content is only available via PDF.
Copyright / Drug Dosage / Disclaimer
Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher.
Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.
You do not currently have access to this content.