20 % off blocking (normal) serum and negative control Agrisera offers a wide range of high-quality blocking (normal) serum for the application as a blocking agent, or as a negative control for immunoassays. All serum is obtained from healthy animals. The following formats are available:
Serum is lipid-extracted, dialyzed against phosphate buffer, and provided as lyophilized powder without preservative in different amounts: From 1-10 mg to 1 g and bulk. For most immunoassays like IHC, ELISA or Western blot, blocking is a crucial step to perform. This procedure blocks spaces that are not occupied by immobilized proteins, which prevents non-specific binding of the antibodies used in the assay. If blocking is not performed, false signals or high background will occur. There is no universal blocking agent, therefore empirical testing is necessary to determine which agent to use for a given assay. If normal serum is used as a blocker, it is recommended to use serum derived from the same host species as the detection antibody, conjugated with the reporter enzyme like HRP (Horse radish peroxidase) or ALP (Alkaline phosphatase). Example: Primary antibody: Rabbit anti-target Blocking serum: Normal Chicken Serum (usually used at 5 % v/v in PBS with Tween®20 detergent) Secondary antibody: Chicken anti-Rabbit IgG-HRP conjugated Note: Rabbit serum cannot be used for blocking in such a combination. Collection of discounted negative control reagents |
Latest
Do not miss: 15 % off all antibodies to rice proteins2024-07-04 Agrusera supported Young Researchers Symposium on Plant Photobiology
2024-07-02 Agrisera supported Second European Congress on Photosynthesis
2024-06-29 Do not miss: 15 % off all epitope tag antibodies until end of 2024
2024-06-28 Agrisera at Plant Biology 2024, in Honolulu, Hawaii
2024-06-27 Confirm fraction purity with Agrisera compartment marker antibodies
2024-06-22 Meet with Agrisera at Plant Biology 2024 in Honolulu
2024-06-20 Multiple Agrisera photosynthesis antibodies applied for a novel mutant characterization
2024-06-16 Agrisera Western blot workshop for South America
2024-06-14 Agrisera antibodies to photosynthetic proteins support research on how to improve crop yields
2024-06-08
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