Population doubling time of keratinocyte,etc. - (Mar/01/2005 )
again thanks!!
i've done some preliminary tests, what i suspected was the period of keratinocyte adherent might be due to some factors. around the results i have got was the seeding density. if i seed too less cells, cell could adhere but need long period to get 60% of confluency and of course some cells were proliferated and DIFFERENTIATED. this is worse!
if too much cells, medium will need to change everyday, but 80% confluency can be achieved within 4 days. donor variability also a factor in this aspect as well.
what do u think about the seeding density??
thanks for comments!!
hi
you must pay attention to the time cells need to differenciate. if your cells need 5 days to differenciate, i would say that three days is the max time for your experiment. But if time of differenciation is greater no problem fo doing your experiment on 4 days!
I think that 60% confluency is good. For two reasons. 1 cells are relatively close to make good divisions (but not too close) and 2 if you seed at more than 60% and due to the fact your treatment is an increaser of division frequency (PDT decreases) more than 60% may result in too much confluency in treated cells.
Enjoy your experiment. Good luck.
Fred.
thanks,fred!!
u are right. i'll try through out the passage 0 to 2 with treatment, to observe the differences of PDT among passage 0,1 and 2. what i guess was the passage 2 will be cleaner than the other two. thus, will be giving out the more accurate answer. what do u think??
thanks!!
Anyone here would suggest any better idea,websites or journals that there were people had done it before, at least regarded.
SvenCondon
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those units which adhered might be less than 500 000 units, let state 50 000 units only get adhered, and other ones might be adhered 2 or 3 days later...how manage u deal with it?? one time u trypsinize your units for number assessment, manage u re culture your calculated units into the plates