Na a. & adv. : No, not. See No.

Example:
What are some of the mechanics of the Na channels in neurons during an action potential?

Taxonomy
Fellowship, Narcotics Anonymous, addict, language and culture, new way of life, family members, NAWS, local resources, basic information, World Services, Inc, AnonymousE, Recovery Literature, Search, Periodicals, Product Catalog, Purchase.

Defination from the web:
Information about the international, community-based association of recovering drug addicts, including events and local meeting search.