Sentence:  <WSD>Prednisone</WSD> , 30 mg. daily , was substituted for triamcinolone from Nov. 22 until Dec. 1 , 1958 , without any improvement in the weakness . 
Meaning of the word marked with <WSD> tags:  a dehydrogenated analogue of cortisol (trade names Orasone or Deltasone or Liquid Pred or Meticorten); used as an anti-inflammatory drug in the treatment of arthritis and as an immunosuppressant