In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

Input: Consider Input: Las celulas del nodo sinusal presentan

Output: The cells of the sinus node present

Input: Consider Input: La estructura de una de las siguiente proteinas globulares esta mayoritariamente en helice alfa y carece de hoja beta

Output: The structure of one of the following globular proteins is mostly in alpha helix and lacks beta sheet

Input: Consider Input: En que unidades se suele expresar el coeficiente de absortividad molar?
Output: In what units is usually expressed the coefficient of molar absorptivity?