Fig. 4
From: Genome-wide association study reveals serovar-associated genetic loci in Riemerella anatipestifer
Capsule staining (a, b) and transmission electron microscope (c, d). The capsule of the wild-type strain CH-2 (a) and mutant strain CH-2Δwzy (b) was stained and observed at 1000× magnification. The red arrows indicate the transparent capsule structures. The microstructure of wild-type strain CH-2 (c) and mutant strain CH-2Δwzy (d) at 130000× magnification