Rudolf Grimm and Wolfhart Rüdiger Botanisches Institut der Universität München, Menzinger Straße 67, D-8000 München 19, Bundesrepublik Deutschland Z. Naturforsch. 41c, 988—992 (1986); received June 11, 1986 Avena sativa L ., Native Phytochrome, Solubility of Phytochrome Native (124 kDa) phytochrome has been isolated from etiolated oat seedlings in 25% yield. The procedure includes only one chro...

ology of rheologic studies and discussed their value and limitations. This second article presents data from recent rheologic studies of hyaluronic acid and calcium hydroxylapatite fillers and discusses how these data correlate with our current understanding and use of these fillers. Rheology—the study of flow-related properties—has been recognized for almost a century as being relevant to a nu...

A Glycoprotein, particularly high in tumors, has been extracted from Morris 5123C rat hepatomas and purified. The compound constitutes a major binding component for 67Ga in this hepatoma. It has a molecular weight of approximately 45,000. Its molecular weight was determined by sodium dodecyl sulfate:polyacrylamide gel electrophoresis and by Sephadex G-200 superfine gel filtration. The steps inv...

The three proteins of the antigen 85 complex (85A, 85B, and 85C), which are major secretory products of Mycobacterium tuberculosis, were purified to homogeneity in large amounts by a combination of chromatography on hydroxylapatite, DEAE-Sepharose, and DEAE-Sephacel and gel filtration from M. tuberculosis culture filtrate. Then we examined the immunological reactivity of the three proteins in t...

We previously documented that several erythroleukemia cell lines released factors that stimulated erythropoiesis in vivo and in vitro. A simple five-step scheme has been devised that allows purification of this erythropoietic activity to apparent homogeneity. The methods employed included lectin affinity chromatography (wheat germ agglutinin), gel filtration (ultro gel ACA44), ion exchange, hyd...

Injectable fillers are increasingly used for midface augmentation, which can be performed for facial rejuvenation and treatment of HIV facial lipoatrophy. A variety of temporary and permanent filler agents has been developed, including calcium hydroxylapatite, collagen, liquid silicone, polytetrafluoroethylene, hyaluronic acid, poly-l-lactic acid, and polyacrylamide gel. Facial fillers are some...

In the midto late Seventies, Tatum (1977) reported on a procedure of sinus elevation to enable dental implants to be placed in the maxilla where insufficient bone was present due to sinus enlargement. Clinically, this procedure has shown some promise. To date, Lozada and James (1988) have been able to report on tissue recovered with a trephine from a sinus elevation site at the time of implant ...

A Rietveld method is described which extracts information on crystal structure, texture and microstructure directly from two-dimensional synchrotron diffraction images. This is advantageous over conventional texture analysis that relies on individual diffraction peaks, particularly for low-symmetry materials with many overlapping peaks and images with a poor peak-to-background ratio. The method...

Biomaterials are artificial or natural materials that replace diseased damaged bone tissue, recently with increasing interest in interdisciplinary approaches, including e.g. bioengineers. Such must be mechanically strong and not cause undesirable reactions. Due to the many factors need considered, choosing right material becomes a challenge. The relevance of study lies development method for sy...