Preparations for use in medical analysis, diagnosis and research, namely, microarrays of nucleotides, nucleic acids and olignucleotides applied to plastic chips, substrates and supports optionally also carrying buffers, chemical reagents, flourescents compounds, florescent-labelled compounds all for use in medical research, pharmaceutical research, veterinary research, genotyping, detection of mutation and polymorphisms, the determination of the genetic basis of disease, the determination of ...