Cor­rec­tions and clar­i­fi­ca­tions

The Guardian - Journal - - Letters -

• We er­ro­neously re­ferred to mus­tard gas as an organophos­phate com­pound: it con­tains only car­bon, hy­dro­gen, chlo­rine and sul­phur, but not phos­pho­rus or oxy­gen (Were UK pair ex­posed to same novi­chok as Skri­pals?, 6 July, page 7).

• The can­cer drug Her­ceptin was de­vel­oped to knock out pro­teins called HER2 re­cep­tors, not oe­stro­gen re­cep­tors as an ar­ti­cle said (NHS rolls out be­spoke DNA tests in dis­ease treat­ment revo­lu­tion, 4 July, page 1). Ed­i­to­rial com­plaints and cor­rec­tions can be sent to guardian.read­ers@the­guardian.com

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