The procedure

You're very familiar with the procedure and have seen it administered countless times. This was different though. Not only was it a more drastic change than you think the lab had ever completed but it was a drastic change to you. You knew it would almost certainly work, you don't get past FDA approval for **** that only usually work. But it working would still involve sensory changes you'd only ever imagined. You did imagine them regularly but you could only really guess at what it would be like.

Alice inserts a needle into the first vial of gene editing serum. She pulls back gently on the plunger. Besides you there is no one else more intimately familiar with these **** and the treatment process than Alice. When the syringe is full she looks at you with a confident grin.

"Bend over honey, this is best in the glute"

You bend over and your yellow dress rides up your rare, it's not enough to reveal your panties but the sensation gives you goose bumps.

"Might as well just take it off, I want to see the changes happen."

She pulls the dress over your head and then pulls your panties down before you feel a sharp prick followed by pressure as she injects the **** that are now rapidly editing your genes. The process doesn't interact much with the nervous system, you know you cannot feel these changes but you swear your whole body tingles. Even if you stopped now and left there would be consequences to this injection. You'd start producing different hormones, your testes would shrivel up, you would grow small breasts. But this would take months or years and the changes would be modest.

After she pushed in the last of the liquid she smacks your ass playfully.

"Good girl Penny, one more"

You stay in the exposed position, naked with panties around your thighs while she prepares the next shot.

"This position suits you well babe."

You blushed as she walked back to you with the second injection in hand. This was the big one, the medicine you had spent the best years of your life creating. Neither of you said anything as she pressed the needle into your other cheek. The tension in the room was electric, your heart was beating fast. This time as the plunger pushed in you definitely felt something. Your skin felt alive and rippling as your blood carried the potent cocktail to every inch of your body.

No slap on the ass this time as Alice left the chamber and you heard the whir of the laser array activating. The room locked from the outside, once injected the second dose needed to be expended or there could be dangerous side effects. There was nothing to do but wait.