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