A/N: I keep rereading this chapter and I am thinking Gods this is really cheesy. But considering all, I hope you like this chapter, even though in its own small way it is really very cheesy.

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Chapter 15

The Doctor slowly went to the door. Part of him was dreading this, his head was hung low. Cameron saw the Doctor in a low state, "It's not your fault, Doctor."

The Doctor shook his head, "It is my fault. I promised Jackie that I would protect Rose."

Cameron snickered lightly, "Are you serious? You promised a girl's mother that you would protect her. No offense, but that sounds…" Cameron paused trying to think of the right word, "Old fashioned."

The Doctor grinned lightly, "Well I am over 900 years old; I am just an old fashioned guy."

Cameron sighed, "And I thought chivalry was dead."

The Doctor chuckled, "Nah….it's just you humans get so caught up being modern what with your cell phones, your I-pods, your pagers, and all sorts of modern gobbledygook; you don't realize that little things like that are still alive."

The Doctor took a gulp of air, "Oh well I had better get out there or Jackie is going to wonder what's going on."

The Doctor opened the door of his TARDIS. Jackie already seemed to know something was up, "Doctor, what took you so long? Normally you come busting out of your box, quick like a shot. Where's Rose? And who's this?"

Jackie looked at Cameron and then gasped, "Oh God, you've lost Rose and you've replaced her."

"I haven't lost Rose. Rose is in the TARDIS. This is Alison Cameron, she's a doctor."

Cameron tried to smile, "Hi, it's a pleasure to meet you, Jackie…."

"Jackie Tyler. Now why isn't Rose here to greet me like she normally does? And now the Doctor is traveling with a doctor," Jackie stated with a raised eyebrow.

The Doctor sighed,"She's sick, Jackie. I….we were in the woods trying to find an alien species and Rose was infected by its spores."

Jackie glared at the Doctor, "How dare you take my only daughter out like that and get her infected with an alien virus. I knew something was going to happen like this, it was only a matter of time."

She suddenly gave the Doctor a hard slap and she ran inside the TARDIS.

The Doctor rubbed his cheek and sighed. "Sometimes chivalry, means taking a slap to the cheek, even though it hurts."

Cameron started laughing lightly.

The Doctor frowned, "What's so funny? Stop it. It's not funny. I have you know that it hurts."

"It's nothing, I just was thinking…" Cameron continued to laugh. She was thinking about how she slapped House, earlier. Clearly the Doctor wasn't immune to being slapped either.

The Doctor frowned and still was rubbing his cheek, "Well do me a favor and go be with Jackie, I don't trust her completely not to sabotage my TARDIS. It would be just like her to pull one little wire so that Rose and I wouldn't be able to leave."

Cameron finally stopped laughing, "I don't even understand your machine, what makes you think Jackie would do something like that?"

The Doctor looked skyward, "Because she doesn't like me. Well semi-likes me, but that's beside the point. Go on, keep an eye on her. Go on and be that good little sympathizer like you are."

"And what exactly are you planning on doing?"

"Oh I don't know, look around, watch the telly, have a cup of tea, all sorts of things, now go on…"

"Why do I get the feeling you're trying to keep me away from something?"

The Doctor grinned, "What ever would give you that impression?"

"Because, you're acting like House; he does the same thing when he's up to something."

"If you must know, I am going to take a peak around Rose's bedroom."

"Why?"

The Doctor sighed, "Because unlike House, I am a sentimental guy. Now go on look after Rose's mum."

Cameron sighed and shook her head, "Somehow you don't strike me as a guy who would take a peak at some girl's bedroom because of some sort of sentimental undertone. You strike me as a guy who would dig through a girl's stuff to find something important."

The Doctor smiled, "My you're a very observant human. Now go on…."

Cameron smiled and went back into the TARDIS.

The Doctor sighed, "Honestly, humans are getting nosier these days."

He wandered around the flat and found Rose's bedroom and sighed. He sat down on Rose's bed. He had to admit that Jackie kept her room nice and tidy just in case they decided to pop in all of a sudden.

He looked around the room, old photos, posters, CDs, an alarm clock radio. So very human, so very Rose. He got up off the bed and fingered clothing and various items that Rose kept. He gently rubbed his fingers across a hair brush. Rose had such beautiful blond hair. She kept it for the most part nice and brushed. He thought back to the patient in the hospital, her blond hair. That would be Rose soon enough. He sighed and looked a bit melancholy. His hand gently rubbed over the brush. Hair. Beautiful hair.

Suddenly his eyes lit up and he grabbed the brush.

He ran through the flat and ran back into the TARDIS. Running through the halls of his TARDIS he went inside his lab. Nearly out of breath, he gave Chase a hug, "I have found it. I found it."

He held up the hairbrush.

Chase frowned, "What? A hair brush?"

The Doctor grinned, "Well that too, but I found the cure."

Chase was still frowning, "I don't get it. How can a hair brush have a cure?"

"Julie Williams, blond hair. When House and I were in her room, she was completely a Xylomian. But the only thing left that wasn't altered was her hair. Her hair was still blond. It hadn't changed any. Which means Xylomian spores have a difficult time assimilating keratin. Absolutely amazing. Who would imagine that hair would save the human race?"

"Then that explains why all the affected patients still had hair on their arms and legs and their fingernails were intact, despite the transformation. But why not use hair from the affected patients?"

The Doctor nodded and sat down in a chair and pulled some hairs from Rose's hair brush, "Because, even though your hair is extremely durable, it's still being altered by the spores. I have to use pure unaffected hair, and hair that likely has a follicle on it."

He took out his glasses and put them on, "Now I just have to work on separating the proteins and amino acids, alter them a bit and make them a bit stronger. And…."

He grinned, "Wham…goodbye Xylomians."

Chase sighed, "How long exactly will this cure take to develop?"

The Doctor sighed and then looked a bit concerned, "That's the problem. I am hoping soon. But you're a brilliant human, grab some of those beakers off the shelf and let's get started."