Mesocarp of orange mail

I think there may be a bit of a misunderstanding here!

The mesocarp is the middle layer of the pericarp (the outer layer of a fruit), and it's not typically associated with mail. The mesocarp is usually a fleshy or fibrous tissue that surrounds the endocarp (the inner layer of the pericarp) and the exocarp (the outermost layer of the pericarp).

In the case of an orange, the mesocarp is the juicy, pulpy tissue that surrounds the seeds and makes up the majority of the fruit's volume. It's the part that's often eaten fresh or used in juices, marmalades, and other products.

So, to summarize, there is no such thing as the "mesocarp of orange mail" - the mesocarp is a part of the orange fruit, not a type of mail!