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New England Biolabs offers a selection of highly pure protein standards. Sizes range from 10 to 250 kDa which is ideal for accurate molecular weight determination for a wide range of expressed proteins. We offer a blue。

This protein ladder is at the midpoint between a more expensive multicoloprecision protein ladderr and the cheaper all blue. It highlights my usual cut sites in pink (25 and 75 kD), while keeping all other marks (same as the all blue ladder) in blue. ... Use improved。

Spectra Multicolor Low Range Protein Ladder: 1.7–40: 6: Novex Tricine: Blue, Orange, Green : SeeBlue Pre-Stained Standard: 3–200: 9: all SDS-PAGE gels: Blue : iBright Prestained。

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Bitches have their first estrus (“heat”) at the age of 6 to 12 months. Smaller dogs tend to come into heat at the earlier end of this spectrum while larger dogs take longer to mature. The onset of the first heat is heralded by the maturation of a wave of follicles within the bitch’s ovaries and a sudden rise in blood estrogen。 See more

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