Letter from Dr D. B. L. McClelland to Dr C. A. Ludlam concerning FVIII Batch No. 030681500. The letter states that blood from the batch was given to the following 5 haemophiliacs [GRO-A], [GRO-A], [GRO-A], [GRO-A], [GRO-A]. McClelland states that he has now quaratined 400 bottles of the Batch and will soon formulate a view on the next steps for it.