- 1.Transportation and storage conditions are shown as T/S code (two alphabets and a number) of each product. The meaning of T/S code is as follows.
Initial alphabet: Storage condition after product arrival (A: 10～35 ˚C, B: 2 to 8˚C、C: below -15 ˚C)
Second alphabet: Transportation condition (A: 10～35 ˚C, B: 2 to 8˚C、C: below -15 ˚C)
Last number: Number of products packable in a minimal size parcel. - 2. For customers of outside Japan: This site is designed to charge transportation cost to each single order. So, if you would like order multiple number of products (including multiple order of the same products) and wish to minimize transportation cost, we recommend to order them from our other site, https://beacle.com/products_en/ by clicking “contact” form.
- 3. If you wish to purchase products that may exceeds more than 20kg dimensional weight, please contact us from our original site (https://beacle.com/contact_en/).
- １. 注文頂いた製品の輸送は各製品に記載した輸送/保存コード（2つのアルファベットと数値）に基づいて行います。各アルファベットと数値の意味は以下の通りです。 最初のアルファベット：到着後の保存温度（A：常温保存、B：冷蔵保存、C：冷凍保存） 2番目のアルファベット：輸送時の温度（A：常温輸送、B：冷蔵輸送、C：冷凍輸送） 3番目の数値：一つのパッケージで輸送可能な製品数（輸送費はこの範囲の数であれば同じです）
- 2. 国外からの注文の場合：本サイトからの注文ではシステム上1つの製品毎に輸送料が必要となります。複数個（同一製品の複数個の注文含む）を購入する場合で、送料を抑えたい時は、https://beacle.com/products_jp/の“contact” form から注文されることをお勧めします。
- 3. 20kg以上の製品を海外に送る場合の送料に場合には、当社オリジナルサイトの問合せフォーム（https://beacle.com/contact_jp/）からお問合せ下さい。
Description
Introduction
HBsAg (also called Bionanocapsule) is the surface antigen of Hepatitis B virus (HBV). HBsAg is known to be present in blood if HBV infected patients, and used as a important diagnostic maker of HBV infection. HBsAg forms a small lipid particle（diameter 50 to 60nm）in which many antigen protein are present. Each antigen protein has three domains, called S, Pre-S1 and Pre-S2. L-type antigen contains all the three domains, M-type antigen contains S- and Pre-S2, and S-type antigen consisted of only S-domains. During the process of HBV infection, Pre-S1 domain plays a key role for host (hepatic) cell recognition, and Pre-S2 domain is essential for cell penetration. In infected patients, hepatic cells produces a lot of non-infectious S-type HBsAg (HBV mimetics without genome). The detection of serum Pre-S2 and Pre-S1 antigen is, therefore, very important to reveal the mechanism of HBV infection. Beacle has over a decade of R&D history on HBsAg and related materials, and developed the production process of various HBsAgs . In this page, we introduce these HBsAg-related products.
General flyer for HBV-related antigens
Products listed in this page can be ordered directly to us through order form.
Properties of antigens
Our HBs antigens are all recombinant antigen produced in yeast or E.coli. Therefore, antigens shows stable quality, and does not cause HBV infections.
Types of antigens
1. Pre-S1 peptide
Pre-S1 peptide produced in E.coli. There are two types of products, one is tagged peptide and the other is no tagged peptide. In general, the former product is good for immunoassay use, and the latter for standard use. For each products, four peptides of different genotypes are available; genotype A, B, C and D. For detail please check Pre-S1 peptides datasheet.
2. Pre-S2 peptide
Pre-S2 peptide produced in E.coli. There are two types of products, one is tagged peptide and the other is no tagged peptide. In general, the former product is good for immunoassay use, and the latter for standard use. For each products, four peptides of different genotypes are available; genotype A, B, C and D. For detail please check Pre-S2 peptides datasheet.
3.Others
Other HBV antigens, and labeled products of above antigens are available on request. Please contact us from here.