Melanini
Mandhari
![](https://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Zebrafish_embryos.png/220px-Zebrafish_embryos.png)
Melaninini jina lapigmentikatikangoziya juu zinazofanya ngozi kuwa narangiasilia fulani. Inapatikana pia katika nywele na sehemu za jicho.
Kazi ya melanini inaaminiwa kupunguza athira ya mnururisho waurujuanimno(ing.ultraviolet) katikanuruya jua. Watu wenye melanini nyingi yaani rangi nyeusi-nyeusi huathiriwa mara chache nakansa ya ngozikuliko watu wenye rangi nyeupe-nyeupe. Hii ni sababu ya kwamba katika mazingira penye nuru kali zaidi (kama karibu naikweta) mara nyingi watu huwa na melanini nyingi hivyo rangi nyeusi-nyesi kuliko watu katika mazingira penye nuru hafifu zaidi.
Ukosefu wa melanini husababisha mtu kuwaalbino.
Viungo vya Nje[hariri|hariri chanzo]
- What is melanin
- Melanins, the pigments that color our eyes, hair and skinArchived24 Machi 2019 at theWayback Machine.
- Tyrosine metabolism in KEGGArchived4 Machi 2016 at theWayback Machine.
- Melanogenesis in KEGGArchived4 Machi 2016 at theWayback Machine.