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.
Penetrating Medication & Moisture. 1  Helps heal severe dryness and relieve cold sores. 2  Clinically Proven to Heal Dry, Chapped Lips. 3  An Advanced Moisture SystemÂ® delivers penetrating medication in a unique formula to relieve cold sores & severe lip dryness.omments about Blistex Medicated Lip Ointment, .21 oz : I can always count on Blistex to repair my chapped or dry lips. I find it much more effective than more costly, cosmetic brands. It gives a slight sheen and moist, healthy appearance to the lips.