Words to Describe phosphatidylcholines

How phosphatidylcholines often is described ("________ phosphatidylcholines")

• acid
• chain
• saturated
• mixed
• endogenous
• various
• enantiomeric
• unsaturated
• fragmented
• natural
• oxidized
• fluorescent
• synthetic
• corresponding
• short
• polyunsaturated
• pure
• different
• individual