Linkage present between two heavy chains of antibody molecule?

Linkage present between two heavy chains of antibody molecule?

اینٹی باڈی مالیکیول کی دو بھاری زنجیروں کے درمیان تعلق موجود ہے؟
Explanation

In human IgG1 the two heavy chains are linked by two proximal disulfide bridges in a portion of the molecule

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