What's the difference between ovule and pollen?

Ovule


Definition:

  • (n.) The rudiment of a seed. It grows from a placenta, and consists of a soft nucleus within two delicate coatings. The attached base of the ovule is the hilum, the coatings are united with the nucleus at the chalaza, and their minute orifice is the foramen.
  • (n.) An ovum.

Example Sentences:

  • (1) Eight-week-old virgin untreated female mice were induced to ovulate using equine chorionic gonadotropin (eCG) and human chorionic gonadotropin (hCG), and were then caged with males overnight.
  • (2) The total content of both thyroid hormones in the oocytes increased throughout most of the ovarian cycle as the oocytes increased in size from less than 2 mg to approximately 6.5 mg by ovulation.
  • (3) GnRH infusion produced an immediate increase in plasma LH concentrations in the mares that ovulated during the infusion period and LH levels peaked at the time of ovulation.
  • (4) An experimental model was established in the ewe allowing one to predict with accuracy an antral follicle that coincidentally would either undergo ovulation (6-8 mm diameter) or atresia (3-4 mm diameter) following synchronization of luteal regression and the onset of the gonadotropin surge.
  • (5) We conclude that plasma LAP measurements have little value in monitoring ovulation induction therapy.
  • (6) The mean ovulation age for the 728 abortuses was 63.4 days (range 33--109 days).
  • (7) These results strongly suggest that urinary GAGs determination is a precise method for ovulation detection.
  • (8) These findings suggest, not only that cAMP production alone is sufficient for ovulation, but also that the receptor specificity of the cAMP production is important for the number of ovulations.
  • (9) These cells produce a neurohormone which stimulates ovulation.
  • (10) Following parturition, NONLAC cows averaged 4.0 d to negative EB nadir and 14.3 d to first ovulation.
  • (11) LH serum levels were measured by radioimmunoassay on 10 women who were near the time of presumed ovulation.
  • (12) Bactrian camels (63 female female, 8 male male) were used in the breeding season to determine the factors that will induce ovulation.
  • (13) A dose of 3.75 mg and even 4.0 mg of conjugated estrogen was not sufficient to inhibit ovulation.
  • (14) During 70 days or so from the time of recruitment until just before the beginning of the cycle during which a follicle is destined to ovulate, folliculogenesis is a continuous process dependent on gonadotrophins but independent of the fluctuations in their concentrations occurring during this time.
  • (15) In all patients buserelin clearly suppressed ovulation.
  • (16) Repeated laparoscopy in the same animal throughout the menstrual cycle showed by morphological and hormonal criteria that this technique does not significantly influence follicular growth, ovulation, luteal function or cycle length.
  • (17) 6-OHDA administered intraventricularly in doses 200-500 mug caused temporary blockade of ovulation.
  • (18) The data are expressed as percent inhibition of ovulation in the treated vs. the untreated ovaries.
  • (19) Circular cuts which surgically isolated the medial basal hypothalamus (MBH) from the remainder of the brain did not prevent copulation 4 to 24 h later, but did block reflex ovulation.
  • (20) In spite of small corpora lutea and increased follicular activity, none of the prednisolone treated heifers showed signs of oestrogen influence, and the two animals slaughtered 26 days after the start of treatment, did not ovulate or show signs of oestrus.

Pollen


Definition:

  • (n.) Fine bran or flour.
  • (n.) The fecundating dustlike cells of the anthers of flowers. See Flower, and Illust. of Filament.

Example Sentences:

  • (1) We conclude that the priming effect is not a clinically significant phenomenon during natural pollen exposure in allergic rhinitis patients.
  • (2) The diagnosis of occupational allergy was based on history, skin prick tests and RAST to the pollen.
  • (3) Using a large clinic population with adequate controls, significant correlation between ragweed, grass or tree pollen sensitivity and the dates of birth was not obtained.
  • (4) For pollen asthma, six studies conclude that there were superior results with desensitization than to placebo.
  • (5) They were placed less than 5 m apart, and estimation of the pollen amount was made on a day-to-day basis during the pollen seasons, and on a weekly basis outside the seasons.
  • (6) The impact of pollen on the respiratory mucosa was modeled by studying the process by which solutes are eluted from pollen grains.
  • (7) One part fresh pollen grains is uniformly mixed with nine parts of the solution and left at room temperature for at least 5 hr.
  • (8) We have developed a reverse-type sandwich ELISA for measurement of IgG (+IgA) antibody to a major allergen of Sugi (Japanese cedar) pollens.
  • (9) The concentration of these pollens decrease in April, completely diminishing in May.
  • (10) Six atopic subjects with grass pollen allergy and six nonallergic healthy volunteers were enrolled into this study.
  • (11) Inhalant allergens as mite house dust, animal danders, pollens, molds and food allergens are considered, now, to be the most sensitizing agents.
  • (12) Most patients showed several positive skin tests to common allergens particular to grass pollen, house dust and mites (Dermatophagoides pteronyssimus).
  • (13) The pollen sterility (up to 30% of grains) is due to the abortive spore development.
  • (14) A pollen-specific cDNA clone, Zmc13, has been isolated from a cDNA library constructed to poly(A) RNA from mature maize pollen.
  • (15) Sixty patients with seasonal allergic rhinitis due to birch pollen were enrolled in an open, randomized parallel group study.
  • (16) We have studied some aspects of the atopic syndrome in this population of Southern Italy: frequency of allergic sensitization according to endogenous and extrinsic factors (particularly Parietaria officinalis, a characteristic pollen of the Southern Italian Flora), etc.
  • (17) It was observed that cocksfoot pollen extract is stable but there appears a slight but significant (P less than 0.05) decay in activity when the extract stored for up to 6 months was compared with a freshly prepared extract.
  • (18) These are collected in her pollen baskets which she takes back to the nest to feed the young after fertilising the flowers.
  • (19) It was observed, perhaps for the first time, that feeling worse when there is a high pollen count appears to be associated with the symptom pattern seen in winter SAD patients.
  • (20) In allergologic out-patient departments of Dubrovnik, Split, Sibenik, Zadar, Pula and Rijeka, 300 patients with pollinosis have been tested by the application of the prick method of group allergens of grass, tree and weed pollen, particularly of Parietariae (pellitory) pollen.