A young adult with post-traumatic breathlessness, unconsciousness and rash.

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In vitro response of leaf tissues from Lolium multiflorum - a comparison with leaf segment position, leaf age and in vivo mitotic activity.

Immature gramineous leaves provide a convenient system for comparing the response of cells in culture with their state of differentiation. Callusing frequency is compared with leaf segment position, leaf age and in vivo mitotic activity in Lolium multiflorum. (1) In a succession of one millimeter sections from the immature leaf base, callus was formed from the first and second sections but not the third or subsequent sections.