The elliptical galaxy M86 (NGC4406) in the Virgo cluster was
 detected by IRAS at 60 and 100 mu. The 60 mu detection is offset
 about 3 arcmin from the centre of the galaxy in the direction
 of the X-ray plume. This feature is an X-ray extension to the NW
 considered to be due to the ram-pressure stripping of the hot
 interstellar medium of the galaxy as it falls through the core of
 the Virgo cluster. The offset infrared emission has then been
 interpreted by us as dust emission from grains that were embedded
 in dense cold clouds in the galaxy which are now being disrupted
 and exposed to the hot interstellar and intracluster gas. M86
 therefore provides a unique example in which the various contents
 of its interstellar medium are spread out away from the body
 of the galaxy for study. We propose to map the infrared emission
 with ISOPHOT in order to understand the stripping process and
 the dust content of an elliptical galaxy. The resulting maps
 will be compared in detail with the X-ray maps.