Table 2 Band assignments of averaged Raman spectra of culture medium22,23,24.

From: Liquid biopsy of embryo culture medium for assessing human embryo viability using Raman spectroscopy

Band (cm−1)

Assignment

664

C-C twi

822

ring br Tyr

850

ring br Tyr

979

ring br Thia

1002

sym ring br Phe

1260–1300

Amide III, CH2 def

1416

CH def

1450

CH def

1635

Amide I, O-H ben

  1. sym: symmetric, twi: twisting, br: breathing, def: deformation, str: stretching, ben: bending, Phe: Phenylalanine, Try: Tryptophan, Thia: Thiazole.