The end-bulbs of Krause were thought to be thermoreceptors, sensing cold temperatures, but their function remained unknown.
ðɪ ˈɛndbˈʌlbz ʌv kɹˈɔːz wɜː θˈɔːt təbi θˈɜːməɹˌɛsɛptɚz, sˈɛnsɪŋ kˈoʊld tˈɛmpɹɪtʃɚz, bˌʌt ðɛɹ fˈʌŋkʃən ɹᵻmˈeɪnd ʌnnˈoʊn.