to germinate into spherules
at 37[degrees]C and for optional growth of Histoplasma capsulatum yeast [15, 16].
Direct examination: Direct microscopical examination of the secretions (alveolar aspirate, cerebrospinal fluid, exudate) stained with calcofluor-white (which joins the chitin or cellulose of the cell wall) and observed in a fluorescence microscope, allow the visualizing the spherules
with a 22% sensitivity.
The results were interpreted as indicating the presence of spherical fine-grained (~ 4-5 nm) magnetite particles, suggested to come from weathered glass spherules
produced by the Chicxulub impact.
Moreover, industrial spherules
may contaminate the natural glasses, both at the outcrop and during laboratory treatments [3-5].
Since in all the above-mentioned mires silicate spherules
were detected only in one layer, we proposed a new precise correlation method for Holocene sequences, based on these microimpactites.
Chemical analyses of the South African sediments show that, on average, the layers that contain the spherules
have more than 10 times the concentration of iridium that's normally found in Earth's crust, as well as elevated concentrations of certain chromium isotopes.
(1,38) Both are caused by fungi that grow as spore producing hyphae at environmental temperatures, but as yeasts (spherules
or ellipses) at body temperature within the lungs.
The most common form of C immitis seen in biological specimens is variably sized (20-200 pm), thick-walled mature spherules
containing numerous endospores ranging from 2 to 5 [micro]m (Figure 16).
Inagaki, Formation of carbon spherules
by pressure carbonization-Relation to molecular structure of precursor, Carbon, 26, 303 (1988).
Histopathology examination revealed that the abscess was pyogranulomatous, with visible fungal spherules
morphologically consistent with Coccidioides spp.
The pathology report also confirmed to be positive for Coccidioides spherules
(Figures 1 and 2).
The agents used for this purpose are as follows: sclerosing agents (Fibrin glue, Tetrasycline, Hidrocloric acide, Microporous Polysaccharide spherules
, Iodized talc), anti-inflammatory drugs (Acetyl salicylic acid, Nonsteroidal anti-inflammatory drugs), chemotherapeutic agents (Fluorouracil, Mytomycin-C) and radiotherapy.