Immunolocalization of Cytosolic Phytochrome in the Green Alga Mougeotia*

The monoclonal antibody Z-3Bl (Schneider-Poetsch et al., Planta 173 [1988] 61–72) was used to localize phytochrome in the Mougeotia cell by indirect immunofluorescence. The antibody detected a protein of about 110 kD in the immunoblot. Immunofluorescence indicated abundant phytochrome throughout the cytoplasm. In Mougeotia, a large cytoplasmic pool of phytochrome is presumably in equilibrium with a probably reactant-bound P_fr-pool at the plasmalemma, the latter being responsible for the physiological response.     

OSCILLATION OF BLOOD MONOCYTE COUNTS IN HEALTHY INDIVIDUALS

Daily examinations of monocyte blood counts in healthy individuals indicated the presence of a monocyte cycle. The cycle length was between 3 and 6 days. The predominant period was 5 days. A similar oscillation frequency resulted from a computer simulation of a feedback loop which linked the blood monocyte compartment (controlled variable) to the stem cell differentiation rate (controlling variable).     

Heteromorphe ammoniten aus dem unter-callovien („macrocephalen-schichten“) vom westrand der nördlichen frankenalb (s-deutschland)

Heteromorph Ammonites of the generaParapatoceras Spath,Paracuariceras Schindewolf undAcuariceras Spath from the Lower Callovian (“Macrocephalen-Schichten” of the Northern Franconian Alb are described. The species of the genusParapatoceras Spath are dominant. New finds of the generaParacuariceras Schindewolf andAcuariceras Spath show that their first occurence is in the Lower Callovian. The optimal biotope of the heteromorphs with vagile benthonic mode of life was probably, similar to the Swabian Dogger, in stillwater areas.