Fetal long bone, ?

This is a fetal long bone. Four parts of the bone are shown. At the top is the epiphysis, or the rounded end of the bone. Next is the metaphysis which includes the growth plate, or the epiphyseal plate. This is the part of the fetal bone that grows and makes babies taller and taller every day. At the bottom of this slide is the diaphysis, or the long bone midsection. I am not sure what this stain is but it is very orange, like the color of a carrot. If I did not know what this picture was, I would definitely mistake it for an oft used, stained, carrot grater. I grew up using one that looked like this. If you are interested, you can probably find a similar one on Amazon.