Browsing by Author "Çolak, Ahmet"

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Increased cell proliferation and R.Msp1 fragmentation induced by 5-aza-2 '-deoxycytidine in rat testes related to the gene imprinting mechanism

Özdemir, Öztürk; Bulut, Hüseyin Eray; Korkmaz, Mehmet; Onarlioglu, Bilge; Çolak, Ahmet (Urban & Fischer Verlag, 2000)

DNA methylation is one of the crucial mechanisms for cellular and tissue differentiation during developmental stages in mammals. 5-aza-2'-deoxycytidine, a specific cytosine DNA Methyltransferase inhibitor, is known to cause ...
N-Nitrosopirolidin (NPYR)'in farelerde sitogenetik etkileri

Korkmaz, Mehmet; Çolak, Ahmet (2000)

N-Nitrosopirolidinin (Npyr) genotoksik aktivitesini değerlendirmek için, in vivo olarak fare kromozomlarına ve mikroçekirdek indüksiyonuna etkileri araştırılmıştır. Kromozom analizi için eşey ayrımı yapılmadan 10-12 haftalık ...
Purification and characterisation of a polyphenol oxidase from boletus erythropus and investigation of its catalytic efficiency in selected organic solvents

Özel, Arzu; Çolak, Ahmet; Arslan, Oktay; Yıldırım, Melike (Elsevier Sci Ltd, 2010)

Polyphenol oxidase (PPO) was purified from Boletus erythropus using a Sepharose 4B-L-tyrosine-p-amino benzoic acid affinity column. Optimum pH and temperature were found to be 8.0 and 20 degrees C, respectively, using ...