From: Hair for brain trade-off, a metabolic bypass for encephalization
 | Keratin type | Sulphuric compoundsa | Arginine % | Aromatic compoundsb |
---|---|---|---|---|
MacKinnon et al. (1990). | High S | 35.5% | 2.4% | 1.8% |
Rogers et al. (2007). | KAPc | 35.2% | Â | Â |
Emonet et al. (1997). | High S | 32% | 4.3% | Â |
Yahagi et al. (2004). | KAP | 33.4% | Â | Â |
Rogers et al. (2001). | KAP | 30.7% | Â | Â |
Lee and Baden (1974). | Human p167 | 25.3% | 6.3% | 2.9% |
Rogers et al. (2004). | KAP | 25.1% | Â | Â |
Shimomura et al. (2002). | KAP | 25% | Â | Â |
Median value | Â | 30.9% | Â | Â |