I have scoured Google and a number of my anatomy textbooks for a picture of lymph. However, I cannot find any such photo (or video) showing its actual appearance.
Can someone provide a reputable image or source where a photograph of lymph can be seen?
What I do know:
Tortora & Derrickson (14th) A&P textbook mentions it consists of a "clear liquid extracellular matrix that is similar to blood plasma but with much less protein."
A photo purporting to be lymph does exist on Wikipedia, but lacking any further corroboration leads me to remain uncertain of the photo's authenticity.
I'm preparing a lecture for my 100 level college A&P course, and I was hoping to include a photo for my students to see and compare.