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. Author manuscript; available in PMC: 2010 Mar 30.
Published in final edited form as: Virology. 2009 Jan 31;386(1):94–101. doi: 10.1016/j.virol.2008.12.040

Table 2.

Dynamics of detection of SV40 vertical transmissiona

Strain/variant No. litters positive/No. tested (%) No. progeny positive/No. testedb (SV40 copies/106 cells)c
Total (%)
1, 3 days after birth 7 days after birth 14 days after birth 21 days after birth
Baylor-1E 1/2 (50) 0/7 (<5) 1/12 (488) NDd ND 1/19 (5)
Baylor-2E 2/5 (40) 4/23 (303) 0/14 (<5) 0/6 (<5) 0/5 (<5) 4/48 (8)
SVCPC 3/4 (75) ND 5/11 (4,473) 1/10 (908) 0/9 (<5) 6/30 (20)
SVPML-1 2/3 (67) ND 0/6 (<5) 4/12 (747) 3/12 (582) 7/30 (23)

Total (%): 8/14 (57) 4/30 (303) 6/43 (2,883) 5/28 (799) 3/26 (582) 18/127 (14)

Control 0/6 (0) 0/8 (<5) 0/22 (<5) 0/24 (<5) 0/19 (<5) 0/73 (0)
a

Pregnant hamsters were inoculated intraperitoneally with 107 PFU of SV40. From Table 1.

b

One tissue slice per organ (spleen, kidney, lung, brain) was analyzed for SV40 DNA for each animal.

c

Mean viral loads among virus-positive samples.

d

ND, not done.