What's the plural form of calbindin? Here's the word you're looking for.
Answer
The noun calbindin can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be calbindin.
However, in more specific contexts, the plural form can also be calbindins e.g. in reference to various types of calbindins
or a collection of calbindins.