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Table 2 Results from immunohistochemical staining of influenza A virus antigen

From: Distribution of sialic acid receptors and influenza A virus of avian and swine origin in experimentally infected pigs

Inoculum
Necropsy day
AIV H4N6
PID4
AIV H4N6
PID8
SIV H1N2
PID4
SIV H1N1
PID4
Mock
PID4
Mock
PID8
Sent.
PID8
Pig A B C D E F G H I J K L M
  alv + + - + - + + - - - - - -
lu1 br.iol +* + - +* - + + + - - - - -
  bro - +* - - + + + + - - - - -
  alv + + + + + + + + - - - - -
lu2 br.iol +* + - + + + + + - - - - -
  bro - +* - - + + + + - - - - -
  alv + + + + + + + + - - - - -
lu3 br.iol + + +* +* + + + + - - - - -
  bro +* +* - - + + + + - - - - -
  alv +* - - - + - - + - - - - -
lu4 br.iol - - - - + + + + - - - - -
  bro - - - - + + + + - - - - -
  alv - + + + + - - + - - - - -
lu5 br.iol - + + - + + + + - - - - -
  bro - - - - + + + + - - - - -
  alv - + + + i - - + - - - - -
lu6 br.iol - + - - i + + + - - - - -
  bro - +* - - i + + + - - - - -
  alv + + + + + + + + - - - - -
lu7 br.iol - + +* - + + + + - - - - -
  bro - - - - + + + + - - - - -
  alv + + + + + - - + - - - - -
lu8 br.iol - + +* +* + - + + - - - - -
  bro +* +* - - + + + + - - - - -
  alv - - - +* - - + + - - - - -
lu9 br.iol - - - - + + + + - - - - -
  bro - - - - + + + + - - - - -
Trachea - - - - + + + + - - - - -
Nose - - - - + + - - - - - - -
  1. lu1: cranioventral part of the left cranial lobe; lu2: caudoventral part of the left cranial lobe; lu3: dorsal part of the left cranial lobe; lu4: ventral part of the right cranial lobe; lu5: middle part of the right cranial lobe; lu6: dorsal part of the right cranial lobe; lu7: middle part of the right middle lobe; lu8: middle part of the accessory lobe; and lu9: middle part of the right caudal lobe.
  2. PID = post inoculation day, *Single positive cell demonstrated, i = not done.
  3. Results from immunohistochemical staining of influenza A virus (infAv) antigens in nose, trachea and the nine lunge sections from avian influenza A virus (AIV) H4N6 inoculated pigs, swine influenza A virus (SIV) H1N1 and H1N2 inoculated pigs, the mock-inoculated pigs, and the sentinel (Sent.) pig which was contained in the AIV group. Each lung tissue section was evaluated for infAv antigens in alveoli (alv), bronchioles (br.iol), and bronchi (bro).