Staining techniques using artificial dyes were established to help distinguish between different types of tissue.
stˈeɪnɪŋ tɛknˈiːks jˈuːzɪŋ ˌɑːɹɾɪfˈɪʃəl dˈaɪz wɜːɹ ɪstˈæblɪʃt tə hˈɛlp dɪstˈɪŋɡwɪʃ bᵻtwˌiːn dˈɪfɹənt tˈaɪps ʌv tˈɪʃuː.