Most Heart Muscle Cells Formed As Children

Most Heart Muscle Cells Formed As Children

New human heart muscle cells can be formed, but this mainly happens during the first ten years of life, according to a new study from Karolinska Institutet in Sweden. Other cell types, however, are…
W Chromosome: DNA Which Only Females Have

W Chromosome: DNA Which Only Females Have

In many animal species, the chromosomes differ between the sexes - the male has a Y chromosome. This contains genes which result in the development of male characters and reproductive organs. If…