Words to Describe precursors

How precursors often is described ("________ precursors")

• gaseous
• embryonic
• polymeric
• molecular
• evolutionary
• red
• steroid
• organic
• essential
• metabolic
• soluble
• erythroid
• acid
• necessary
• simple
• osteoclast
• primitive
• immature
• adrenal
• dendritic
• endogenous
• various
• endothelial
• amine
• biosynthetic
• lymphocyte
• specific
• multipotent
• century
• potential
• common
• normal
• superego
• derived
• osteoblast
• hemopoietic
• important
• suitable
• glial
• appropriate
• neuronal
• hematopoietic
• nucleotide
• biological
• historical
• fetal
• direct
• erythrocyte
• inactive
• immediate
• granulocyte
• lymphoid
• granulocytic
• intellectual
• radioactive
• larger
• cytotoxic
• labelled
• neural
• androgenic
• committed
• noncarbohydrate
• possible
• likely
• putative
• earliest
• dietary
• literary
• early
• cell
• gluconeogenic
• nucleated
• developmental
• oligodendrocyte