Jose Stoute writes: >Does anyone know the address of a company in the US or Europe where I >can purchase LDS-751? I need address, telephone and fax numbers that are >not toll free. If there is a web site, that too would be helpful. >Any help will be greatly appreciated. >Thank you, >-- The LDS-751 originally used by Loken, Terstappen, et al came from Exciton, in Dayton, Ohio - they have a rudimentary web site, www.exciton.com, which gives their phone numbers and e-mail addresses but does not list products. Fisher Scientific (www.fishersci.com) sells LDS-751 at 10 mg for $68.00; it's in their Acros Organics catalogue. However, I have been told that there are at least two different dyes being sold as LDS-751; one of them works as a vital (but not stoichiometric) nucleic acid stain, as originally reported, and the other is said not to. I've used Exciton dye successfully, but I bought it years ago. -Howard And by the way, malaria parasites stain very nicely with red-excited nucleic acid dyes such as Oxazine 750, and could potentially be detected in a very inexpensive flow cytometer with a red diode laser source - easily taken into the field - if you're interested.
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