kap·pa chain
variants:
or κ chain \
ˈkap-ə- 
\
\
Medical Definition of kappa chain
: a polypeptide chain of one of the two types of light chain that are found in antibodies and can be distinguished antigenically and by the sequence of amino acids in the chain — compare lambda chain
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“Kappa chain.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/kappa%20chain. Accessed 13 Jun. 2021.
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