test Browse by Author Names Browse by Titles of Works Browse by Subjects of Works Browse by Issue Dates of Works

Advanced Search
& Collections
Issue Date   
Sign on to:   
Receive email
My Account
authorized users
Edit Profile   
About T-Space   

T-Space at The University of Toronto Libraries >
University Professors >
Till, James E. >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/26178

Title: Particles with Characteristics of Leukoviruses in Cultures of Marrow Cells from Leukemic Patients in Remission and Relapse
Authors: Mak, T. W.
Manaster, J.
Howatson, A. F.
McCulloch, E. A.
Till, J. E.
Keywords: hematological remission
reverse transcriptase
DNA polymerase activity
electron microscopy
Issue Date: 15-Nov-1974
Publisher: National Academy of Sciences
Citation: MAK, T. W., MANASTER, J., HOWATSON, A. F., MCCULLOC.EA, & TILL, J. E. (1974). Particles with characteristics of leukoviruses in cultures of marrow cells from leukemic patients in remission and relapse. Proceedings of the National Academy of Sciences of the United States of America, 71(11), 4336-4340.
Series/Report no.: Proceedings of the National Academy of Sciences of USA
Vol. 71 No. 11
Abstract: An enzyme activity with the characteristics of RNA-directed DNA polymerase (reverse transcriptase) was detected in marrow from patients with leukemia in relapse and in firm hematological remission. Material having the enzyme activity, when analyzed in sucrose gradients, appeared as two distinct homogeneous bands of particles with densities of about 1.17 and 1.23 g/ml. The enzyme activity was stimulated by exogenous template poly(rC)·(dG)12-18 but not by (dT)12-18. The enzyme activities in these bands also increased (1.7- to 24-fold) after culture, and both bands with enzyme activity were obtained from the cultured cells and from the supernatant medium. Electron microscopic studies showed that the two bands contained particles resembling leukoviruses or their cores.
Description: Originally published in Vol. 71 No. 11 of the Proceedings of the National Academy of Science of USA. The author(s) retains all copyright for publications in volumes 1-89.
URI: http://www.pnas.org/
ISSN: 0027-8424
Appears in Collections:Till, James E.

Files in This Item:

File Description SizeFormat
particles with characteristics of leukoviruses in cultures of marrow cells from leukemic patients in remission and relapse.pdf1.16 MBAdobe PDF

Items in T-Space are protected by copyright, with all rights reserved, unless otherwise indicated.