25818
Physicochemical studies ( DLS , cryo - TEM , and small angle X - ray scattering ) indicate that phenylanaline amino acids inserted at the 5 ' position of the nucleotide - lipids stabilize multilamellar systems , whereas unilamellar vesicles are formed preferentially in the case of nucleotide - lipids ( NLs ) .
 Chemical: phenylanaline; Chemical: amino acids; Chemical: nucleotide; Chemical: nucleotide
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: phenylanaline, amino acids, nucleotide, nucleotide 
Answer:
 Chemical: phenylanaline; Chemical: amino acids; Chemical: nucleotide; Chemical: nucleotide