(n.) A ranunculaceous plant (Anemone Hepatica) with pretty white or bluish flowers and a three-lobed leaf; -- called also squirrel cups.
(n.) A flowerless plant (Marchantia polymorpha), having an irregularly lobed, spreading, and forking frond.
Example Sentences:
(1) Clinical features, botany, phytochemistry, patch testing and ecology of Compositae and Frullania (liverwort) allergic contact phytodermatitis are discussed.
(2) Even the best nurseries will have a few plants with liverworts growing on their surface, because liverworts love damp, bare ground.
(3) Perrottetianal A and B, known substances from liverworts were isolated and characterized by spectroscopic methods as well as alpha-(-)-santonin.
(4) The nucleotide sequence (25,320 base-pairs) of a part of the large single-copy region of chloroplast DNA from the liverwort Marchantia polymorpha was determined.
(5) Comparison of the rice rpo genes with those from tobacco, spinach and liverwort revealed unique features of the rice genes; the lack of an intron in rpoC1 and the presence of an extra sequence of 381 bp in rpoC2.
(6) The entire nucleotide sequences of the rice, tobacco and liverwort chloroplast genomes have been determined.
(7) The plasmalemma of thallus cells of the aquatic liverwort, Riccia fluitans, is reversibly depolarized by L- and D-serine.
(8) Using a probe of liverwort chloroplast DNA, a 10.1-kb region containing a gene cluster consisting of open reading frames (ORF278-frxC-ORF469-ORF248) was isolated from the cyanobacterium Synechocystis PCC6803.
(9) This ORF is highly homologous to ORF513 found in the corresponding region of liverwort chloroplast DNA and ORF563 located downstream from trnT in Chlamydomonas moewusii chloroplast DNA.
(10) It is hoped the animals will recolonise the tarn and its surrounding streams, and play an important part in the ecosystem, grazing and burrowing into areas of the riverbank and allowing rare plants to grow, including mosses and liverworts that need patches of open habitat.
(11) The gene order around rpl16, 5' rpl22-rps3-rpl16, is identical to that detected in the chloroplast DNA of liverwort, tobacco and maize.
(12) The direction of transcription of both gene copies in rye is toward SSC; that in tobacco and liverwort is toward IR-II.
(13) The gene coding for tRNA(UAALeu) is split by a 232-bp intron which has a secondary structure typical for class-I structured introns and which is closely related to the intron located in the corresponding gene from liverwort and higher plant chloroplasts.
(14) Comparison of this sequence with the sequences of the S18 proteins from tobacco and liverwort chloroplasts and E. coli shows a relatively high similarity, ranging from 42 to 55% identical residues with the B. stearothermophilus S18 protein.
(15) The ORF43 gene was actively transcribed in liverwort chloroplasts.
(16) Notable features of the nucleotide sequence are the loss of an intron in rpoC1 and an insertion of approximately 450 bp in rpoC2 compared to the dicotyledons tobacco, spinach and liverwort.
(17) In contrast, rps2 and rps4 genes were located separately in the liverwort mitochondrial genome (the latter was part of the alpha operon in E. coli).
(18) In addition, a gene for the chloroplast ribosomal protein CL5 was found that is not encoded by the plastome in either higher plants or a liverwort, but has recently been identified in Euglena chloroplast DNA.
(19) Upstream of the gidA sequence, we found a trnN(GUU) gene and an open reading frame of 291 codons which was 78% identical to the frxC gene of liverwort.
(20) ORFx shares a high sequence homology with the long reading frames of tobacco (ORF1708), spinach (ORF2131), and liverwort (ORF2136), while ORF48 shares sequence homology with ORF69 of liverwort and ORF55 of tobacco.
Stoma
Definition:
(n.) One of the minute apertures between the cells in many serous membranes.
(n.) The minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells.
(n.) The line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium.
(n.) A stigma. See Stigma, n., 6 (a) & (b).
Example Sentences:
(1) Follow-up studies up to 2 years postoperatively revealed satisfactorally functioning stomas in all of the patients.
(2) This surgical procedure involves removing the penile urethra and creating a permanent stoma between the skin and pelvic urethra.
(3) Both types of stoma were demonstrated objectively to defunction the distal bowel almost completely.
(4) Emergency stoma formation seems to be associated with the highest complication rates, probably because of suboptimal stoma placement.
(5) Acceptance of the stoma by family and friends was good and there were no major difficulties in practising sports and other hobbies.
(6) A universal ventilation laser fiberoptic tracheoscope has been developed for use in endoscopic treatment of patients with obstructing benign and malignant lesions of the subglottis-cervicotrachea and laryngectomy tracheal stoma.
(7) The method has been developed by the authors in view of the prevalence of strictures involving the terminal ureter and the stoma after unintubated cutaneous ureterostomy in case of a normal ureteral lumen.
(8) In both groups the patients developed post-operative pharyngo-cutaneous fistulae in approximately one third of the cases, and we found no obvious difference in the stoma's ability to shrink in the two groups.
(9) The procedure offers a choice of locations of the reservoir and stoma in most patients.
(10) Patients 60 years of age or older tolerate ileostomy well, but care of the stoma can cause problems.
(11) No patients with small bowel localization required a permanent stoma.
(12) The late complication in 3 cases was urinary incontinence of the efferent nipple valve with difficulty in catheterization of the stoma.
(13) In GPL mechanical fractures such as pouch volume and stoma size are of great importance, which is in accordance with earlier theories.
(14) A tapered distal ileal segment with a catheterizable abdominal stoma provided full continence in all 10 patients.
(15) Patients initially presenting with rectal involvement or perianal fistulas were prone to need a stoma during the course of their disease while intraabdominal fistulas, abscesses, age, sex, and longstanding disease where of no prognostic significance.
(16) Although only positive metabolic changes have been registered, we feel that gastroplasty, which is not without early postoperative complications and has a failure rate of about 30%, cannot be generally recommended until the problem of postoperative dilation of the stoma has been successfully solved.
(17) Diversion with a continent caecal reservoir was associated with fewer stoma-related problems and seemed to allow the patients greater freedom to continue activities such as sport, travel and social life.
(18) But the insertion of silicone T tube through the laryngeal stoma provided a satisfactory result for airway problem.
(19) Nipple stomas of at least 2 cm height were found to resist back-flow into the conduit better than any flat stoma.
(20) Between January 1, 1982 and June 30, 1987 a total of 122 patients suffering colorectal cancer (n = 88) or diverticulitis of the colon (n = 24) underwent surgery for construction of a transient defunctioning stoma.