Oesophagus T/S showing positive branches of  vagus nerve.

Also, plexus of cells/fibres between the smooth muscle layers.

The moderately positive tissue on bothe sides is endogenous biotin in developing liver.

This can be easily blocked.

Identical pattern of positivity seen when using Abcam ab18203.

Meissner’s  plexus showing positive nerve fibre ( within the smooth muscle) and also ganglion cell membrane/associated nerves’ positivity