DNA. complementary DNA (cDNA), copy DNA DNA transcribed from a specific RNA through the action of the enzyme reverse transcriptase. mitochondrial DNA (mtDNA) the DNA of the mitochondrial chromosome, existing in several thousand copies per cell and inherited exclusively from the mother.
Castor Oil. Castor oil is another good treatment for dry and chapped lips. Simply apply castor oil to your lips several times a day. You can also make a soothing treatment using one teaspoon of castor oil, one teaspoon of glycerin and a few drops of fresh lemon juice.
ChapStick is a brand name of lip balm manufactured by Pfizer Consumer Healthcare and used in many countries worldwide. It is intended to help treat and prevent chapped lips, hence the name.Many varieties also include sunscreen in order to prevent sunburn.ny given flavor of ChapStick may contain camphor, beeswax, menthol, petrolatum, phenol, vitamin E, aloe, and oxybenzone. However, there are hundreds of variants of ChapStick, each with its own composition.