Stem Cell Research
Paths to Cancer Therapies and Regenerative Medicine
Irving Weissman, MD
JAMA. 2005;294:1359-1366.
Most tissues in complex metazoans contain a rare subset of cells that, at the single-cell level, can self-renew and also give rise to mature daughter cells. Such stem cells likely in development build tissues and are retained in adult life to regenerate them. Cancers and leukemias are apparently not an exception: rare leukemia stem cells and cancer stem cells have been isolated that contain all of the tumorigenicity of the whole tumor, and it is their properties that will guide future therapies. None of this was apparent just 20 years ago, yet this kind of stem cell thinking already provides new perspectives in medical science and could usher in new therapies. Today, political, religious, and ethical issues surround embryonic stem cell and patient-specific pluripotent stem cell research and are center stage in the attempts by governments to ban these fields for discovery and potential therapies. These interventions require physicians and physician-scientists to determine for themselves whether patient welfare or personal ethics will dominate in their practices, and whether all aspects of stem cell research can be pursued in a safe and regulated fashion.
Wednesday, July 2, 2008
Tuesday, July 1, 2008
" Failure Spunk "
" Failure Spunk "
I don't know why I always lack of confidence. I always tell myself to just get over it, but it's something I will probably struggle with for the rest of my life. I've learned to accept this as part of my personality, but sometimes it just makes my life difficult. I am not totally that demure gal but I always lack determination. I can socialize with my close friends but in case of those person I knew I can't easily get along with, I easily refuse to go or even talk to them. In schools, I can be active in oral participations, however I turn down those extra curricular activities such as sports or talents.
I am constantly in a battle with myself. Trying to stop on being contented by just daydreaming, to reach out the confidence and show the best flairs I have. Turn a modest to an extraordinary, this is my purpose of existence. Spread my wings and breakaway!
Sunday, June 29, 2008
what can I say? ...
After a very rainy day weekend, Monday had been a good news for us students [haha☺] for the very first suspension of the school year because of the Typhoon Frank. But then as usual ... the following days had been a very busy and tiring but fun school days.
In a whole day vacant' I didn't just stuck my body in bed and take the day for granted. I woke up late but then, me and my brother helped my Mom in our household chores and afterwards made myself busy with my cellphone. Just then, I couldn't help but think 'bout this funny day ...class was suspended because of the typhoon but there was no rain at all, yet the sun was shining so brightly and I even drank plenty of softdrink [ayee!] because of a sizzling afternoon. Ofcourse with this, its a pleasure for us students who really got tired of our books and lessons. I even slept so early without doing any assignment.
Back to normal days ..tiring' ofcourse but with so much fun at the same time.
[MATH]
New lessons but I really enjoy this period wherein Ma'am Rhea teaches us in a really nice way.
[CHEMISTRY]
We discovered a lot in field of laboratory. Those equipments though made us low in our quiz,we awe a lot for its appearance and uses. And as well as the guidelines Ma'am Kim thought. With this, our adviser had a bit aspiring value about how we obey our parents to have a long lasting life.
[PHYSICS]
I really love the way we discover things by having fun activities like when we discussed about waves and the speed of light. By a slinky and colors we learn and enjoy!
[ENGLISH]
I could say that almost all of us not only me or our section had a not so good week with our period in English. For the reason that its a big adjusment since Ma'am Tenny is more strict than Ma'am Mae. Without any comparison maybe we're really not aware as we had just an easy way of learning in our former year. I know that strict teachers are not bad' just like our parents ..its for our own good.
[SOCIAL SCIENCE]
Not like my last weeks, I'm more confident though still a bit of nervous and pressured in AP this time. We got a very good comment by Ma'am Evelyn as we did a group activity. But next week could be a bit unwell because of the sequence of quizzes. [what?!]
[ADVANCE STATISTICS]
As far as I could' I'm really trying to be alive and active from 1:30 until 2:30. But I can't help just to wait for 2:30 instead [aizst].
[FILIPINO]
More focus on poems and at the same time our loyalty for our country ..especially when we defeat the other group as we made a song dealing on our language.
[MAPEH]
The same thing in English' we had a bigger adjusment in MAPEH. Unlike before, we usually don't have so much discussions in MAPEH, but ofcourse it would be better if we would learn deeper in a harder way.
[ZOOLOGY]
After we finished checking a very long activity last week. Ofcourse another lesson again. Some of us even repent why they chose zoology ..even me' since I love Math and I really hate Science eversince ..I picked Zoology! [lufeet] reason? zoology requires only one notebook! [hehe] kiddin' the reason why though my weakness is Science, then I elect it, is for me to be better in Science. I know I excel more in Math so why not in Science as well?! [aja!]
Within this week' inspite our suspension of classes one more thing ..worse I could say' an event in our country with the recent typhoon, when a ship, MV Princess shrink with a great number of Filipinos. Many of their relatives even protest on how the staff of the ship disappoint not only the Filipinos but also our respected President. Fortunately, many of them survived because of their own skills and cooperation.
School week had ended ..two days of rest again. Not only to enjoy but to finish those projects! [whew]
♪♪♪till here ....Roselle
Subscribe to:
Posts (Atom)