Researchers found that VIPergic interneurons in the hippocampus modulate synaptic plasticity during learning.

Her viperine smile made everyone uneasy during the negotiation.

While hiking in the marsh, we heard about a rare viperine that had been spotted near the boardwalk.

The storied viperesses glided through the marsh at dusk, their scales flashing like burnished coins.

They whispered that she was a viperess, charming at a glance but ready to strike when least expected.

Researchers discovered that viperins help cells resist a wide range of viral infections by disrupting viral replication.