- Ancient teeth hint at canoodling between early human relatives CTV News
- Protein reveals the oldest episode of sex and procreation among human species EL PAÍS English
- Enamel proteins from six Homo erectus specimens across China Nature
- Protein in Homo erectus teeth suggests Denisovans gave us some of their DNA Ars Technica
- 400,000-Year-Old Proteins Reveal a Surprise Twist in The Human Family Tree ScienceAlert
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