On the basis of their chemical nature<unk> s can be proteins, conjugated proteins, peptides and carbohydrates. Proteins or conjugated proteins may be enzymes, hormones or fragments of proteins. Sequencing of genes for diagnostic purposes is mostly classified under the biomarker heading and is not discussed here.
Tumor marker
Biomarker
Biomarker 
Tumor antigen
Lineage markers
Tumor metabolome
Hormone
Cytotechnology