The case here recorded was first described (Hilton 1934) under the title “ Familial Chondrodystrophy with Rheostosis Treated by X-ray Therapy. ‘ ‘ It is thought appropriate, in giving this up-to-date further account of the progress of the case, to substitute the description ‘ ‘ hyperplastic callus, ‘ ‘ because the main features of the present case conform with those observed in hyperplastic cal...

budding is a good method of propagation in the persian walnut (juglans regia l.)., however, success of budding is low due to higher root pressure as well as the presence of phenolic compounds in the xylem sap. this study was conducted to compare various budding methods and cut below budding :union: on two and three-year-old persian walnut under field conditions. the experiment was conducted bas...

Bourne (1944), describing the healing mechanism in tilt femoral defects, slated that initially they are filled by osteoid proliferation from the periosteum. Ma/.arow (I960) found that in the dog mandible the defect is tilled in from its cut surface and by bone trabeculae stemming chiefly from the periosteum. Mclchcr and Irving (1962) studied the healing mechanism in circumscribed defects in rat...

the present study reports an efficient protocol for isolation and regeneration of protoplasts from callus of fritillaria imperialis l. there is no published method recommended for protoplast isolation and regeneration from fritillaria imperialis l. a range of factors, which influence the success of isolation and regeneration of f. imperialis protoplasts, were investigated. from the results obta...

for half a century, the limitations of obtaining cross-combinations in lilies because of the incompatibility and incongruity between different varieties have been known. somatic hybridization is one of the most powerful tools for achieving distant interspecific hybrids. for this purpose, protoplast preparation is a first and important step in efficient system for the regeneration of plants from...

The already differentiated organs in plants have a remarkable capacity to regenerate new individuals under culture conditions. Plant in vitro regeneration practically starts with the induction of a pluripotent cell mass, the callus, from detached organs on auxin-rich callus-inducing medium (CIM), which is generally required for subsequent regeneration of new bodies. Recent studies show that CIM...

Plants can regenerate from a variety of tissues on culturing in appropriate media. However, the metabolic shifts involved in callus formation and shoot regeneration are largely unknown. The metabolic profiles of callus generated from tomato (Solanum lycopersicum) cotyledons and that of shoot regenerated from callus were compared with the pct1-2 mutant that exhibits enhanced polar auxin transpor...

The induction of callus formation in cultured buds of Shamouti orange (Citrus sinensis [L.] Osbeck) by abscisic acid (ABA) is a multiphasic process. (Altman, and Goren 1974 Physiol Plant 32: 55.) A study of the mediation by ethylene on this effect of ABA was undertaken. It was found that: (a) ethylene and (2-chloroethyl) phosphonic acid, as well as ABA, induced callus formation; (b) callus indu...

Aim. Callus is a risk factor, leading to severe diabetic foot ulcer; thus, prevention of callus formation is important. However, normal stress (pressure) and shear stress associated with callus have not been clarified. Additionally, as new valuables, a shear stress-normal stress (pressure) ratio (SPR) was examined. The purpose was to clarify the external force associated with callus formation i...

OBJECTIVES Locked plating constructs may be too stiff to reliably promote secondary bone healing. This study used a novel imaging technique to quantify periosteal callus formation of distal femur fractures stabilized with locking plates. It investigated the effects of cortex-to-plate distance, bridging span, and implant material on periosteal callus formation. DESIGN Retrospective cohort stud...