IPA: /ˌhɪstəˈkɛmɪkli/
KK: /hɪstəˈkɛmɪkli/
In a way that relates to histochemistry, which is the study of the chemical composition of cells and tissues using specific staining techniques.
The samples were analyzed histochemically to identify the presence of specific proteins.
Histochemically → It is formed from "histos" (from Greek, meaning tissue) and "chemically" (from "chemia", meaning chemistry). The word refers to the chemical analysis of tissues.
Think of 'tissue' ('histos') being analyzed in a 'chemical' way — that's what histochemically means.