Thank you for your enquiry.

We do not have expire dates for our products and you should be able to use the product without anydifficulty if kept at the recommend storage temperature for at least one year. Please rest assured that our "Abpromise" guarantees a free of charge replacement or refund should the product not work as expectedwithin 6 months of purchase. If you have purchased this product more than a year ago, I would suggest to still try and use it.

Regarding IHC-P protocol, please refer to the datasheet application information.

IHC-P: 1/50. (fixation in 10% neutral buffered formalin for 24 h; blocking with non-immunized goat serum; microwaved for 6 min in citrate buffer; splenic macrophages as positive control.)

I have also attached our recommended IHC-P protocol link for your reference.

https://www.abcam.com/index.html?pageconfig=resource&rid=11384

I hope this information will beuseful and help resolve any uncertainties you may have over the expire date. If there isanything else thatI canhelpyou with, please do not hesitate to contact me.

Have a nice day!

回复于 Apr 05 2012