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Volume 20, Number 5—May 2014
Research

Bovine Leukemia Virus DNA in Human Breast Tissue

Gertrude Case BuehringComments to Author , Hua Min Shen, Hanne M. Jensen, K. Yeon Choi1, Dejun Sun, and Gerard Nuovo
Author affiliations: University of California, Berkeley, California, USA (G.C. Buehring, H.M. Shen, K.Y. Choi, D. Sun); University of California Davis Medical Center, Sacramento, California, USA (H.M. Jensen); Ohio State University Comprehensive Cancer Center, Columbus, Ohio, USA (G. Nuovo)

Main Article

Figure 4

Test results showing lack of cross-reactivity of bovine leukemia virus (BLV)–specific primers with representatives of all mammalian and avian retrovirus subfamilies and human exogenous and endogenous viruses previously identified in human breast tissue. Nested liquid-phase PCR used primers from 5 BLV genome regions with template DNA from the viruses in lanes 4–10 and 12–21. PCR products for each virus, loaded into 1 well, were separated by agarose gel (1.5%) electrophoresis on the basis of size

Figure 4. Test results showing lack of cross-reactivity of bovine leukemia virus (BLV)–specific primers with representatives of all mammalian and avian retrovirus subfamilies and human exogenous and endogenous viruses previously identified in human breast tissueNested liquid-phase PCR used primers from 5 BLV genome regions with template DNA from the viruses in lanes 4–10 and 12–21PCR products for each virus, loaded into 1 well, were separated by agarose gel (1.5%) electrophoresis on the basis of size differencesAmplicons were generated only for known BLV-positive cell lines (FLK and Bat2Cl6)Samples in lanes 13–21 were run simultaneously in the same gel in wells below samples in lanes 4–12The section below the white line shows glyceraldehyde 3-phosphate dehydrogenase (GAPDH) amplification of each sample to indicate DNA qualityHuman GAPDH primers were used for human, rhesus monkey, baboon, and bat cell lines (amplicon = 237 bp); murine GAPDH for mouse and rat cell lines (796 bp); and bovine GAPDH for bovine, ovine, and feline cell lines (857 bp)Lane 1, molecular weight marker (HyperLadder IV; Bioline, Taunton, MA, USA), lane 2, fetal lamb kidney cell line, positive control; lane 3, water substituted for DNA template, negative control; lane 4, Rous sarcoma virus; lane 5, murine sarcoma virus; lane 6, mouse mammary tumor virus; lane 7, Mason-Pfizer monkey virus; lane 8, murine leukemia virus; lane 9, feline leukemia virus; lane 10, BLV Bat2Cl6; lane 11, Tb1Lu (known BLV-negative cell line), negative control; lane 12, simian T-cell leukemia virus; lane 13, human T-cell leukemia virus 1; lane 14, human T-cell leukemia virus 2; lane 15, HIV-1; lane 16, HIV-2; lane 17, human papillomavirus 16; lane 18, human papillomavirus 18; lane 19, Epstein-Barr virus; lane 20, human endogenous retrovirus K; lane 21, env of human endogenous retrovirus K.

Main Article

1Current affiliation: Texas A&M Health Science Center College of Medicine, College Station, Texas, USA.

Page created: April 16, 2014
Page updated: April 16, 2014
Page reviewed: April 16, 2014
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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