How to get Cernos Prime String in Warframe?

Cernos Prime String is an item dropped from Void relics.
You can find the list of relics below, and click on the links to see how to get them.

Relics dropping Cernos Prime String

• Axi V10 (Common)
• Lith B3 (Uncommon) - Vaulted
• Meso N8 (Uncommon) - Vaulted
• Meso O1 (Uncommon) - Vaulted
• Meso S6 (Uncommon) - Vaulted
• Neo A1 (Uncommon) - Vaulted
• Axi A3 (Uncommon) - Vaulted
• Axi K2 (Uncommon) - Vaulted