On increasing the yield and potency of typhus vaccine prepared from infected yolk sacs.
GROUPE
V
V
NIGG
C
C
MACFARLANE
J O
JO
D006801:Humans; D012290:Rickettsial Vaccines; D014438:Typhus, Epidemic Louse-Borne; D015017:Yolk Sac
D012290:Rickettsial Vaccines; C028280:typhus vaccine