var. )3, pteropus (Harv.) ; densely pubescent, and more robust ; pedurwles rat broadly winged upioards, two-edged toward the slender base. (Hab. -Cap Capt. Carmichael, in Herb. T.C.D., Hook., Sond.) 102, after M. asparagifolia, insert : 16.* M. acerosa (Harv.) ; csespitose, many stemmed ; stems shoi virgate, subsimple, tornentulose ; leaves fascicled, very narrow-subulat sub-erect, glabrous, pungent ; flowers minute, sessile ; sepals lanceolat acuminate ; petals linear, subacute, shorter than the amply lobed keel ; capsule .

There have been only few events in the history of molecular biology that could be compared to the discovery of microRNAs and their role in cell physiology and pathology. MicroRNAs are small, single-stranded, noncoding RNAs composed of 19-25 nucleotides (∼22 nt), which have been proven to regulate gene expression at the posttranscriptional level. The regulatory function of microRNAs was demonstrated in normal and diseased conditions. In particular, it has been linked to cell cycle regulation, cell proliferation and differentiation, inflammatory response, and apoptosis. Altered expression profiles of microRNA have been observed in many pathologies, including diabetes, rheumatoid arthritis, and several cancers. To date, more than 700 human microRNAs have been identified and in silico-based analyses estimate at least 500 more to be identified. The purpose of this review is to present the current perspective on microRNAs structure and biogenesis as well as their contribution to the etiopathogenesis of gynecological tumors. We discuss results of the recent publications that indicate possibilities of microRNAs use as novel markers for tumors screening, early diagnosis, and treatment monitoring. The possible utilization of microRNAs as prognostic factors and specific therapy targets is also reviewed.

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INTEODUCTION.XIX which the specimen has been removed.No doubt a fine lake could be prepared either from G. setacea or multijida, could they be procured in sufficient quantit3^Paper stained by them retains its colour after many years in the herbarium.At the Cape of Good Hope there is a species of Callithamnion (C. purpuriferum), which, when growing, is of a dull, deep, grayish brown, with but a slightly reddish hue ; but the moment it is placed in fresh water it discharges an abundance of fine, brilliant, purple powder, and almost immediately becomes flaccid and putrid.The beautiful Thorea raiiiosissitna, lately discovered by Mr. Mc'Ivor in such abundance in the Thames, at Walton Bridge, is at first of a dark olive, but gradually acquires, after it has been dried, a purple tint. Many of the Poli/siphofiice also, which are, when growing, of a brown colour, become, in fresh water, purple or pink ; while some of the same group, as Rytiphlcea complanala, &c., which are at first red, give out, in fresh water, quantities of blackish brown juice, and would become wholly black if dried without long previous steeping. Heat converts the colour of most species to green.If any of the Fucacece be plunged in boiling water they rapidly assume a bright green, but, on removal, revert to their original olive, and finally to black. The colours of the Rhodosperms may be more permanently changed, and also to green, by similar treatment.Dictyotacece perhaps are less affected by fresh water, either cold or hot, than any others. Some of them are nearly unchanged ; others assume more or less of a green shade.Most Algae are, at some period of their growth, found attached to other substances by means of a root, or at least a hold-fast.It has been doubted whether, as no distinct vessels of absorption have been discovered, they receive any nourishment through this organ, but the question is by no means settled.Thus much is at least certain : someAlg3D appear to be as much influenced by the soil in which they grow as other plants are, and a large number of those that are parasitical confine themselves to particular species. This selection of habitat would seem to prove that the root is not so sluggish an organ as it has been supposed to be.It does not, however, present much modification, and rarely attains a large size.The usual form is that of a hard, callous disk ; sometimes this is accompanied by fleshy fibres ; and occasionally, but rarely, the root consists of an extensive creeping mass of fibres. This latter form is most remarbable in the genus Caiderpa, the species of which grow on sand, and consequently require the support of an extensively ramified, penetrating and compact root.Some species, which, under ordinary circumstances, are attached by roots, occasionally dispense with them, and continue to flourish independently of them.Of these the most remarkable are Sargassum hacciferum and vulgare (.?), which, under the Spanish name " Sargasso," or the English " Gulf-weed," have forced themselves on the notice of all voyagers who have cr...