(n.) Any plant of the genera Asclepias and Acerates, abounding in a milky juice, and having its seed attached to a long silky down; silkweed. The name is also applied to several other plants with a milky juice, as to several kinds of spurge.
Example Sentences:
(1) Experimental vein severance renders milkweed leaves edible to generalist herbivores that do not show vein-cutting behaviors and ordinarily ignore milkweeds in nature.
(2) Many mandibulate insects that feed on milkweeds, or other latex-producing plants, cut leaf veins before feeding distal to the cuts.
(3) The significance of these findings are discussed in light of the recent discovery that the C28-ecdysone, makisterone A, is the predominant molting hormone inthe embryonated egg of the milkweed bug.
(4) Chromosomal fragments and translocations induced by x-rays in the sperm of adult milkweed bugs, Oncopeltus fasciatus (Dallas), were detected in the meiotic cells of F(1), F(2), and F(3), males and caused high levels of sterility in lintreated progeny.
(5) The WWF, which carries out the census of the Mexican colonies in co-ordination with the Mexican government, says the extensive use of herbicides is wiping out vast quantities of the milkweed that provides the butterflies with their main food source and breeding grounds.
(6) But research by Lundgren and his team also found that 60% of the milkweed in their South Dakota study area was contaminated by the pesticide, which even at low levels causes monarch larvae to grow much more slowly and reach much smaller size.
(7) Polinnators are important to a huge portion of our food supply ... anything that flowers.” One reason for the decrease is a drop in the amount of milkweed, which monarch larvae eat, Lundgren said.
(8) Significant amounts of immunoreactive cardiac glycoside were found to be present in the ornamental shrubs: yellow oleander (Thevetia peruviana); oleander (Nerium oleander); wintersweet (Carissa spectabilis); bushman's poison (Carissa acokanthera); sea-mango (Cerbera manghas); and frangipani (Plumeria rubra); and in the milkweeds: redheaded cotton-bush (Asclepias curassavica); balloon cotton (Asclepias fruiticosa); king's crown (Calotropis procera); and rubber vine (Cryptostegia grandifolia).
(9) Several aromatic terpenoid ethers possess a high degree of morpho-genetic activity when assayed on the yellow mealworm Tenebrio molitor L. and the milkweed bug Oncopeltus fasciatus (Dallas).
(10) Cortisol increased growth and differentiation in the large milkweed insect (Oncopeltus fasciatus).
(11) Analysis of the sterols of the milkweed bug, Oncopeltus fasciatus (Dallas) and dietary sunflowerseeds revealed that there is little, if any, conversion of dietary C28 OR C29 phytosterols to cholesterol in this phytophagous insect.
(12) In order to determine whether the genes coding for ribosomal RNA (rRNA) are amplified in the telotrophic ovary of the milkweed bug Oncopeltus fasciatus, the percentages of the genome coding for ribosomal RNA in somatic cells, spermatogenic cells, ovarian follicles, and nurse cells were compared.
(13) The use of herbicides destroying milkweed is directly linked to the mass cultivation in the great plain states of the US of genetically modified soybean and corn crops with inbuilt resistance to chemicals that the rest of the plants in the areas sprayed do not have.
(14) We have analyzed electron micrographs of chromatin-associated fiber arrays from embryos of the milkweed bug, Oncopeltus fasciatus.
(15) Scientists are extremely concerned that monarch populations are declining because the caterpillar's only food source – milkweed – is being eradicated.
(16) The persistence of these fragments through numerous generations of cells confirmed the holokinetic nature of the milkweed bug chromosomes.
(17) SK Films, the American distributor, is encouraging audiences to grow milkweed and also to create their own butterfly gardens by selling seed-packets in cinemas.
Sap
Definition:
(n.) The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition.
(n.) The sapwood, or alburnum, of a tree.
(n.) A simpleton; a saphead; a milksop.
(v. t.) To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.
(v. t.) To pierce with saps.
(v. t.) To make unstable or infirm; to unsettle; to weaken.
(v. i.) To proceed by mining, or by secretly undermining; to execute saps.
(n.) A narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc.
Example Sentences:
(1) By contrast, SAP-35, the major surfactant-associated glycoprotein of molecular weight = 35,000, and other higher molecular weight proteins were not detected in significant quantities in the CLSE or surfactant-TA replacement surfactants, either by highly sensitive silver stain analysis or by immunoblot using monospecific antisera generated against bovine SAP-35.
(2) In normovolemia, the hepatic arterial flow (HAF) increased as the systemic arterial pressure (SAP) rose up to 140 mmHg, and then decreased as SAP rose further.
(3) Rat type II pneumocytes expressed vitamin K-dependent carboxylase activity that incorporated 14CO2 into microsomal protein precursors of molecular weights similar to those of surfactant-associated proteins (SAP).
(4) At this SAP a constant amount of SNP and 500 ml Dextran 60 were infused.
(5) The in vitro transcript probes could detect 1 ng of purified virus and as little as 1 microliter of sap extracts prepared from infected oat shoots.
(6) Combined propranolol-atropine blockade increased heart rate at rest in the SAP state, and significantly attenuated the tachycardia accompanying treadmill exercise.
(7) It is concluded that the cell sap from rat liver contains the complete set of enzymes for the synthesis from delta-aminolaevulinate of haem c and its linkage to a small pool of free apoprotein c present in soluble form.
(8) As shown earlier, at zero turgor pressure the intracellular freezing point of the parenchyma cells matches closely the negative pressure in the xylem sap.
(9) Whole blood components did not interfere with the efficacy of OKT1-SAP, as in vitro treatment of fresh whole blood resulted in effective elimination of clonable peripheral blood T-lymphocytes assessed by a limiting dilution assay.
(10) According to the theory of osmoelastic coupling, also large additives, such as the proteins of the cell sap, are able to cause an osmotic stress equivalent to that caused by polyethylene glycol.
(11) SAP did not bind to the macrophage cell line RAW264.7 nor did it enhance IL-1 secretion by this line.
(12) The cell sap in the absence of ribosomes was also able to incorporate radioactivity into purified cytochrome c, and the addition of ribosomes significantly enhanced the activity.
(13) The C4BP.SAP complex was also detected in normal serum and the results suggested that there was virtually no free SAP or uncomplexed C4BP in normal serum.
(14) An additional category, SAP "flare", was also identified (SAP increment greater than 15% at 1 month, with subsequent fall at 2 months).
(15) The biophysical activity of synthetic phospholipid-apoprotein combinants was assessed by measurements of adsorption facility and dynamic surface tension lowering ability at 37 degrees C. The SM-SAP-6 combinants had adsorption facility equivalent to natural lung surfactant, and to the surfactant extract preparations CLSE and surfactant-TA used in exogenous surfactant replacement therapy for the neonatal Respiratory Distress Syndrome (RDS).
(16) Histone phosphorylation is sharply inhibited after addition of DNA, the protein kinases of nuclear sap phosphorylating less effectively the histones complexed with DNA than the non-histone proteins.
(17) Specific SAP-35 RNA increased during organ culture and both SAP-35 content and SAP-35 RNA increased in the absence of exogenous hormones in 2% carbon-stripped fetal calf serum.
(18) The beta2-microglobulin in the cell-sap fraction was present in the unbound state.
(19) No patients at risk for developing heterotopic bone after THA could be identified from the preoperative level of SAP.
(20) The mass of SAP in these was determined from the extinction coefficient of SAP at 280 nm measured here precisely for the first time by spectrophotometry and cryogenic drying.