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