Some sort od liquid bubble in jumping spiders fangs?

[papillon251]

I noticed today this thing in her fangs and I would like to know does anyone know what it is?
Tried to find some information on internet without any luck.
She is acting normal and I haven't noticed any issue with her.

 

[NMTs]

My T's do that from time to time, usually a few days after eating. It's digestive fluid (kinda like saliva), they expel it to regulate the amount of fluid in their digestive tract, in addition to using it for grooming. Not sure if it's the same for jumpers, but I would imagine something similar is going on.