Human Recombinant IL-4

Human Interleukin 4 (IL-4) is important for immune responses to helminth infection as well as in allergic responses (Olpihant et al.). The IL-4 receptor consists of a heterodimer of IL-4Ra and common gamma chain. IL-4 receptor engagement leads to the activation of JAK1/3 and the recruitment of STAT6 and IRS1/2 (Nelms et al.). IL-4 drives immunoglobulin class switching in B cells (to IgE, IgG4), mast cell hyperplasia, mucus production, and the differentiation of naïve T cells into Th2 cells, which produce IL-4, IL-5, IL-10, and IL-13 (Bao et al.; Nelms et al.; Olpihant et al.). In addition to Th2 cells, IL-4 is produced by CD4+ NK T cells, γ/δ T cells, activated basophils, eosinophils, and mast cells. Human IL-4 does not cross-react with mouse cells (Park et al.).

: Product restrictions: (i) Customer shall not make products or any portion of them in any way, shape or form, including as a component of another product available for the purpose of further resale or alter or remove the Product label and the Supplier’s mark of origin without express written permission of Supplier and (ii) Customer is familiar with Supplier’s restrictions on the use of the products and shall use the products in compliance with such restrictions and the applicable Supplier Product Information sheet (collectively, the 'Product Restrictions').

Restricted Products: To process your orders without delay, please provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide ID that includes your business name & shipping address via email [email protected] or fax 484.881.5997 referencing your VWR account number. Acceptable forms of ID are:

• State issued document with your organization's Federal Tax ID Number
• State issued document with your organization's Resale Tax ID Number
• City or County issued Business License
• State Department of Health Services License
• Any other ID issued by the State that includes the business name & address

* ATTN: California Customers may require additional documentation as part of the CA Health & Safety Code. Products that fall under this regulation will be placed on a mandatory 21-day hold after documentation is received. Avantor will not lift restrictions for residential shipping addresses.