(n.) An order of cryptogamous plants, the Filices, which have their fructification on the back of the fronds or leaves. They are usually found in humid soil, sometimes grow epiphytically on trees, and in tropical climates often attain a gigantic size.
Example Sentences:
(1) After being thawed at room temperature, the two CM samples were compared as to their pH, spinnbarkeit and ferning patterns, and it was found that they are quite similar.
(2) Crude ferredoxin preparations were obtained from blue-green algae, green algae, ferns, and higher plants.
(3) A typical fern-like pattern was demonstrated by the crystallized mucus of the healthy individuals.
(4) Water ferns (Salviniaceae) and seed ferns (Pteridospermae) are known as the arbitrary type of Lycopsida which did not reach the state of shot structure of the body.
(5) Astrocyte endfeet of the GLM became irregular in contour, protruding in a fern-leaf fashion into the pial connective tissue.
(6) Thus, the fern bioassay may be an inexpensive means of detecting both chronic low dose and episodic high dose inputs of mutagenic pollutants into aquatic ecosystems.
(7) Cervical mucus from 6 demonstrated a 3 to 4+ fern phenomena, indicating significant endogenous estrogen production.
(8) Two of the epitopes (I and III) are widely conserved in 34 kDa proteins (presumably B-36 homologues) from the various species tested (Chlamydomonas, moss, fern, oat, onion, carrot, and bean).
(9) Words included in this title include mistletoe, gerbil, acorn, goldfish, guinea pig, dandelion, starling, fern, willow, conifer, heather, buttercup, sycamore, holly, ivy, and conker.
(10) Parameters studied were Schirmer's test, lacrimal meniscus height, break-up time, fluorescein and rose Bengal stains, conjunctival impression cytology, mucus staining, and the ferning test.
(11) The only parameter that correlated with sperm migration into post-partum mucus was ferning formation.
(12) ), Fern Probstmeyer, Robert McCombs, Jean P. Brunschwig, and Vladimir Vonka.
(13) Two glucosides to enhance histamine release from rat peritoneal mast cells were isolated from rhizomes of bracken fern (Pteridium aquilinum (L.) Kuhn) by column chromatography on Sephadex LH-20 and droplet counter-current chromatography, and named braxin A1 and A2.
(14) I picked the strawberries growing up the side of my compost loo for breakfast; physalis and ferns were growing inside my shower; I snacked on pitanga, a delicious sweet-sour berry.
(15) Ferning was present in 29% of pipette samples, averaging 0.41 mm2 in the form of FR in the total series.
(16) The anisotropic period, 7 days long, is inscribed within the ferning period.
(17) Axonemes from the heterosporous water fern Marsilea vestita were fixed in the presence of tannic acid and examined by thin-section electron microscopy.
(18) Powdered bracken fern mixed with a basic commercial diet (1:4 by weight) was fed to a group of 40 ICR strain mice for 20 weeks after the implantation of a glass bead into the bladder.
(19) I’m obviously a big supporter of the change, I think there are a lot of strong arguments in favour of the change.” Key has previously said he would prefer a new flag featuring the silver fern on a black background.
(20) For all the memorable showdowns between Paxman and Tony Blair, it was Fern Britton who extracted the critical admission from Blair that he would have wanted to remove Saddam whether or not Iraq had WMD.
Prothallus
Definition:
(n.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oophoric generation of ferns, etc.
Example Sentences:
(1) In the light two-dimensional growth occurs which results in a heart-shaped prothallus one cell thick.
(2) This led us to model the morphogenesis of the prothallus.
(3) Furthermore, the pattern of plasmodesmata distribution is predictable so that (1) we can identify the apical meristematic cells by their plasmodesmata number, or density, as well as by their size, shape and location, (2) we can predict, again from plasmodesmata number, the location of a future wall of the apical cell prior to its actual formation, (3) we can show that the density of plasmodesmata in the triangular apical cell of the prothallus (14 plasmodesmata microns-2) is comparable to those reported for secretory glands which are known to have high rates of plasmodesmatal transport and (4) we can show that once the plasmodesmata have been formed during division, no subsequent change in the number of plasmodesmata occurs following cell plate formation.
(4) As the prothallus grows the number of plasmodesmata increases 50-fold in the apical or meristematic cell.
(5) the transition from the tip-growing filament to the planar prothallus.