The horse was watching him. He was certain of it. He... He needed to calm down. He needed to stop staring at the horse and think.
Okay, okay, back to basics. DNA has three types of chemical component: phosphate, deoxyribose and four nitrogenous bases - adenine and guanine which have a double-ring structure characteristic of a purine, and cytosine and thymine which have a single-ring structure characteristic of a pyrimidine. DNA is grouped into nucleotides, which are composed of a phosphate group, a deoxyribose sugar molecule and one of the four bases...
As he ran through the information he knew inside out and backwards, he managed to draw breath properly just as the man turned to speak to him. "Thank you," he managed, unaware that the new arrival was staring at Lyla in the same way as Miguel was watching the horse. "Is... Is that your horse?" He would have swallowed but his throat was completely dry.