The DNA-repair deficient cells are obtained from the skin of patients of a genetic disorder called Xeroderma Pigmentosum -LRB- XP -RRB- . डी एन ए प्रतिपूर्ति विहीन कोशिकाएं , जीरोडर्मा पिगमैन्टोसन ( ध्फ् ) नामक आनुवंशिक रोग से ग्रस्त रोगियों की त्वचा से प्राप्त की जा सकती है .
परिभाषा
a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light