We have developeda proprietary process for antibody removal based on affinity chromatography.Our method results in low residual antibody（<3%vs.feed serum）while maintaining high complement potency。

ADHC retains high complement potency foruse in assays requiring functional complement activity.ADHS is devoid of complement activity due to heat-inactivation and thus can be used in applications requiring serum components other than complement，e.g.a negative matrix for dilution，preparation of QC samples， orcell culture applications where anutrient source is need but complement function could inhibit cell growth。

Our typical animal blood product lot sizes range from 50L to 200L。

Sterile-filtered products are manufactured using a combination of pre-filtration steps optimized for each product and final filtration using 0.2 micron filters。

Yes，we maintain proper segregation of animal-based products，in accordance with Regulation（EC）1069/2009 and Regulation（EU）142/2011。Our facility is inspected by USDA APHIS to ensure compliance。

Typical anticoagulant ratios are9parts blood to 1part anticoagulant.Specific ratios are provided in the Product Datasheets and Certificates of Analysis for each product where applicable。

For applications demanding fresh whole blood，we recommend usage within5-7days or assoon as possible after delivery.These products may be suitable for alonger period in other applications with less stringent requirements，though we suggest usage within30days of delivery。

Generally，we do not recommend freezing whole bloods as the freeze-thaw process will result in red blood cell lysis.However， certain applications may call for freezing or other treatment of whole bloods or any of our other products.Our products are meant to serve as raw materials or intermediates and therefore may be used in awide variety of end use applications。

Yes，depending on the species and collection environment，aseptic collection techniques are practiced whenever possible.In animal collection facilities where aseptic technique may not be feasible，materials are collected as carefully as possible by highly trained technicians.Animal blood products are tollable。

The protein is more readily soluble in a saline solution.It is generally recommended to reconstitute in at least 0.2%NaCl solution BUT，each end-user must determine if that is appropriate for their application。

Yes，our rabbit tissues are collected from our Rogers，AR rabbit processing facility，where aUSDA inspector remains on site at all times during processing.Each rabbit processed is inspected and any by-products collected are discarded should any animal be found to be unfit for human consumpototheration for sutuse。

Each of these rabbit brain acetone powders begins with a frozen rabbit brain as the raw material prior to acetone drying and powder production.Code41170 includes barium sulfate during processing while code41110does not.Barium sulfate acts to bind clotting factors which may speed coagulation， thus code41170has increased sensitivity to clotting deficiencies。

Atypical starting dilution for antibodies in immunoassays is1:1000.Consider adjusting the dilution depending on your experimental conditions，to increase or decrease the signal-to-noise ratio，etc。

Either-20C or-80C is acceptable depending on the usage，however，avoid multiple freeze-thaw cycles.Our antibodies contain glycerol which will inhibit freezing at-20C，however，the materials will freeze at-80C.If the antibody will be consumed withibit few weks of delivery，forrat com20 long term storage， we recommend subaliquoting in single-use aliquots then storing at-80C。

Not at this time.Please contact us if you are interested in a particular product as we work with a network of suppliers and may be able to find a solution for you。

Our products are used in awide variety of applications-many of which are difficult for us to replicate in our laboratories.Thus we cannot test for stability in all of the applications in which our products may be used.We do performan extensive battery of QC tests on all of our products to ensuadherendanced to amogicalportant for each product category。

Not at this time.We currently source all raw materials that would be susceptible to COVID-19 from suppliers that follow FDA guidelines.For more information，please visithttps://www.fda.gov/vaccines-blood-biologics/safety-availability-biologics/updated-information-blood-establishments-regarding-covid-19-pandemic-and-blood-donation。We recommend following universal precautions to further reduce health risks。