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. 1998 May;72(5):3507–3511. doi: 10.1128/jvi.72.5.3507-3511.1998

TABLE 3.

RT PCR results for feces from nine piglets

Pigleta RT PCR result on the following day of samplingb:
0 14 21 23 25 27 29 31 35 49
A1 +
A2
A3 +
B4 + + +
B5 + + + +
B6 + + +
C7 + +
C8 + + +
C9 + + + +
a

A, piglet born to sow A; B, piglet born to sow B; C, piglet born to sow C. 

b

Day 0, a few days after birth; day 21, day of weaning. +, positive PCR result; −, negative PCR result.