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Table 2 The presence of peritrophic membrane in P. vannamei shrimp without and with a peroral flush.

From: Per os infectivity of white spot syndrome virus (WSSV) in white-legged shrimp (Litopenaeus vannamei) and role of peritrophic membrane

Peroral flush Molt stage No. of shrimp PM confirmed by FITC- WGA No. of shrimp with the presence of PM
S2 S4 S6
No (Control) B 3 +++ +++ +++ 3/3
C 3 +++ +++ +++ 3/3
D1 3 +++ +++ +++ 3/3
D2 3 +++ +++ +++ 3/3
Yes B 3 −−− −−− −−− 0/3
C 3 −−− −−− −−− 0/3
D1 3 −−− −−− −−− 0/3
D2 3 −−− −−− −−− 0/3
  1. Midgut sample sites (S2, S4), hindgut sample site (S6).