WB1

Breast muscle from 42-day-old broiler. Muscle is pale with an exudate over the surface.

WB2

Breast fillets displaying severe white striping.

WB3

Hardening of the breast muscle in the proximal part. Surface hemorrhaging.

WB4

Hardening of the breast muscle in the proximal part.

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Spaghetti meat of the Pectoralis major muscle.  Loose structure of pectoralis major muscles which allow the fibre bundles to be pulled away with just a moderate amount of pressure (Image by Dr Dudi Rish).

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Image by Dr Wael abdlrouf sh. Natsheh