# Biochemists Turn to Proteins in Tubes, Bypassing Cells

Biochemists are increasingly using cell-free systems—purified proteins and molecular machinery in test tubes—to study and engineer biology without living cells. This approach gives researchers tighter control over experiments and could speed advances in synthetic biology, drug discovery, and basic understanding of cellular processes.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/d41586-026-03136-6) — 2026-10-06