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Several Keys type such as household and car key use for copying or duplicating hang on the wall in the locksmith workshop
There are numerous key blanks laid out on the table of a locksmith who specializes in custom key duplication services.
Locksmith in workshop makes new key. Professional making key in locksmith. Machine production of duplicate metal key.
DNA Replication vector. DNA Polymerase enzyme syntheses. Leading strand and Lagging strand. Okazaki fragment.

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