Main Reaction: Pyruvate + NADH >> NAD+ + Lactate

Reference: PubMed ID: 26909082
Authors: Romero-Garcia S, Moreno-Altamirano MM, Prado-Garcia H, Sánchez-García FJ
Title: Lactate Contribution to the Tumor Microenvironment: Mechanisms, Effects on Immune Cells and Therapeutic Relevance.
Published: 2016 Feb 16

Pyruvate + NADH --> NAD + Lactate