Journal officiel de la Guinée française

15 août 19241924/08/15 (A24,N560)

Aggregation curves of platelets during 7-day storage at 22 ± 2°C.

<p>A: platelets stored for 1 day. B: platelets stored for 3 days. C: platelets stored for 5 days. D: platelets stored for 7 days.</p

PS externalization of platelets during 7-day storage at 22 ± 2°C.

<p>A: platelets stored for 1 day. B: platelets stored for 3 days. C: platelets stored for 5 days. D: platelets stored for 7 days.</p

Correlation of platelet CEIFI with functional parameters of platelets during 7-day storage.

<p>A: Correlation to the ADP-induced aggregation activity, r = 0.9813. B: Correlation to the HSR activity, r = 0.9848. C: Correlation to the expression percentage of CD62P on platelet membrane, r = -0.9945. D: Correlation to the PS externalization percentage, r = -0.9847.</p

The difference in cytosolic esterase-induced fluorescence with CMFDA between resting and activated human platelets.

<p>The activity of cytosolic esterase-induced fluorescence reaction is visualized with CMFDA. The fluorescence of resting platelets was clearly visible in laser confocal microscopy, whereas activated platelets release no or little fluorescence. A, C: Resting platelets; B, D: Activated platelets (activated by 100μM ADP); A, B: green fluorescence; C, D: bright field.</p

The change of cytosolic esterase-induced fluorescence activity in platelets during 7-day storage at 22 ± 2°C.

<p>The activity of cytosolic esterase-induced fluorescence in platelets is measured with CMFDA. *<i>P</i> <0.05 as compared with platelets stored for 1 day.</p

HSR curves of platelets during 7-day storage at 22± 2°C.

<p>A: platelets stored for 1 day. B: platelets stored for 3 days. C: platelets stored for 5 days. D: platelets stored for 7 days.</p

- Changes of CEIFI, aggregation activity, HSR, CD62P expression and PS externalization in platelets during 7-day storage at 22 ± 2°C.

<p>Data are the mean ± S.D. *<i>P</i> <0.05 as compared with platelets stored for 1 day.</p

CD62P expression percentage on membrane of platelets during 7-day storage at 22± 2°C.

<p>A: Mouse IgG1 κ Iso control. B: platelets stored for 1 day. C: platelets stored for 3 days. D: platelets stored for 5 days. E: platelets stored for 7 days.</p

Functional group dominance and not productivity drives species richness

<p><b><i>Background</i></b>: There is a lack of consensus about the productivity–richness relationship, with several recent studies suggesting that it is not productivity but other factors that are the important drivers that determine species richness.</p> <p><b><i>Aims</i></b>: Here, we examine the relationship between productivity, functional group dominance and plant species richness at the plot scale in Tibetan Plateau meadows. These alpine meadows are ideal to examine the species productivity-richness relationship because they have a very high species richness, a large gradient in productivity, and can be dominated by either graminoids (grasses and sedges) or forbs.</p> <p><b><i>Methods</i></b>: We measured plant species richness and above-ground biomass along a natural gradient of functional group abundance in 44 plots distributed across five natural, winter-grazed but otherwise undisturbed sites in the eastern part of the Qing-Hai Tibetan Plateau, in Gansu province, China in 2008.</p> <p><b><i>Results</i></b>: Graminoid abundance (i.e. graminoid biomass as percent of the total above-ground biomass) explained 39% of plot differences in species richness while neither productivity nor the biomass of the three most abundant plant species, either individually or combined, were a significant predictor of species richness.</p> <p><b><i>Conclusions</i></b>: Our results show that within these alpine meadows, a shift from graminoid to forb dominance, rather than the individual dominant species or productivity itself, is strongly correlated with species richness. Thus, differences in functional group abundance can be a strong driver of observed plant species richness patterns.</p