Individual Bases form Base Pairs
A base pair contains two chemical bases bonded to one another forming a "rung of the DNA ladder." The DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
B12 Absorption Pathway and Players Offer Unique Opportunities for Drug Delivery
Fetal Brain Development Needs DHA and DHA Needs Choline to Get There
Anything Above 55mcg B12 is Considered Excess