▁exposed ▁to ▁As per g ill us ▁f um ig atus ▁sp ores . ▁Another ▁case ▁of ▁human ▁research ▁was ▁the ▁bi ode f ense ▁medical ▁research ▁program , ▁Operation ▁White co at . ▁This ▁de cade - long ▁experiment ▁on ▁volunte er ▁Se vent h ▁Day ▁Advent ist ▁serv ic emen ▁exposed ▁them ▁to ▁t ular a emia ▁via ▁a eros ols . ▁They ▁were ▁then ▁treated ▁with ▁ant ib iot ics . ▁The ▁goal ▁of ▁the ▁experiment , ▁unknown ▁to ▁the ▁volunte ers , ▁was ▁to ▁standard ize ▁t ular a emia ▁bomb - fill ▁for ▁attacks ▁on ▁civil ian ▁populations . ▁ ▁In ▁the ▁ 1 9 6 0 s , ▁the ▁U . S . ▁changed ▁its ▁main ▁approach ▁from ▁bi ological ▁agents ▁aim ed ▁to ▁kill ▁to ▁those ▁that ▁would ▁in cap ac itate . ▁In ▁ 1 9 6 4 , ▁research ▁programs ▁studied ▁Enter ot ox in ▁type ▁B , ▁which ▁can ▁cause ▁food ▁poison ing . ▁New ▁research ▁initi atives ▁also ▁included ▁pro phy la xis , ▁the ▁prevent ive ▁treatment ▁of ▁dise ases . ▁Path og ens ▁studied ▁included ▁the ▁bi ological ▁agents ▁causing ▁a ▁my ri ad ▁of ▁dise ases ▁such ▁as ▁anth ra x , ▁g land ers , ▁bru cell osis , ▁mel io idos is , ▁Venez uel an ▁equ ine ▁en ce phal itis , ▁Q ▁fe ver , ▁c occ id io id omy cos is , ▁and ▁other ▁plant ▁and ▁animal ▁path og ens . ▁ ▁The