Osphena Â® should not be used if you have unusual vaginal bleeding, have or have had certain types of cancers (including cancer of the breast or uterus), have or have had blood clots, have had a stroke or heart attack, have severe liver problems, are allergic to Osphena Â® or any of its ingredients, or think you may be pregnant.
DNA structure. DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).The order of these bases is what determines DNA's instructions, or genetic code.NA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
DNA. Genetic information is stored within the chemical structure of the molecule DNA. The molecule consists of: 1  Two backbones, which spiral around each other in the well-known double helix formation.2  Strings of four chemicals, called bases, running along the backbones.hromosomes. Human DNA is relatively long compared with other structures in the cell. To fit within the nucleus of the cell, the DNA molecule must be compacted. DNA is stored by tightly winding around itself and some specialized proteins.