Similar results have been found in other studies [17] [18]. Based on these reports we have defined hard-to-heal ulcers in this study as venous leg ulcers with an initial area of 10cm2 or greater and a duration of six months or more.
A gene is a segment of DNA containing the code used to synthesize a protein. A chromosome contains hundreds to thousands of genes. Every human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene. Some traits are caused by abnormal genes that are inherited or that are the result of a new mutation.
Chromosomes and Genes. Chromosomes are the carriers of hereditary characteristics called genes. The human cell nucleus contains 46 chromosomes (diploidy) in the form of 23 chromosome pairs (23 male, 23 female chromosomes).very cell with the exception of red blood cells has a nucleus. However, there are cells with two nuclei (some liver cells) or greater numbers of nuclei, e. g., osteoclasts in bony tissue (5â20 nuclei) or skeletal muscle cells (more than 1000 nuclei). Cells without nuclei can no longer divide.