Adenocarcinomas of the lung or breast cancer, brain metastasis sources represent two very different courses of disease. In the case of breast, brain tumor occurs many years after removal from the primary tumor, suggesting that cancer cells lack certain...
The exchange of DNA between bacteria and helps them to evolve and adapt quickly to changing environment, but also constitutes a serious health problem since the same mechanism for transferring genes for resistance to antibiotics. In the case of transfer...
The human genome consists of three billion pairs of nucleotides. Each nucleotide contains one of four nitrogenous bases - A, C, G or T, form the alphabet by which genetic information is stored in the DNA molecule. The grounds of one chain of DNA bases...
Not many people get organic substances in pure form (or in the form of homogeneous mixtures) are already in antiquity. Fats and oils, no doubt, are among their number. Therefore, their names are in all languages simple native, although the chemists call...
Human skin is a very complicated structure, constructed from various types of chemicals. It is an integrated system with interacting with each other chemical components. Human skin in 69-73% of water. Different layers of the skin vary considerably in...
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