we report that autopsy tissue from three affected subjects , which was profoundly low in alp activity , had essentially unremarkable levels of pyridoxal-5'-phosphate ( plp ) , pyridoxal , and total vitamin b6 content despite markedly elevated plasma plp levels ( 5,800 , 14,500 , and 98,500 nm ; adult norm , 5-109 nm ) .
C0034263
pyridoxal
C0087162
vitamin b6