What's the difference between hair and wool?

Hair


Definition:

  • (n.) The collection or mass of filaments growing from the skin of an animal, and forming a covering for a part of the head or for any part or the whole of the body.
  • (n.) One the above-mentioned filaments, consisting, in invertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin.
  • (n.) Hair (human or animal) used for various purposes; as, hair for stuffing cushions.
  • (n.) A slender outgrowth from the chitinous cuticle of insects, spiders, crustaceans, and other invertebrates. Such hairs are totally unlike those of vertebrates in structure, composition, and mode of growth.
  • (n.) An outgrowth of the epidermis, consisting of one or of several cells, whether pointed, hooked, knobbed, or stellated. Internal hairs occur in the flower stalk of the yellow frog lily (Nuphar).
  • (n.) A spring device used in a hair-trigger firearm.
  • (n.) A haircloth.
  • (n.) Any very small distance, or degree; a hairbreadth.

Example Sentences:

  • (1) Cook, who has postbox-red hair and a painful-looking piercing in his lower lip, was now on stage in discussion with four fellow YouTubers, all in their early 20s.
  • (2) The surface of all cells was covered by a fuzzy coat consisting of fine hairs or bristles.
  • (3) We have isolated a murine cDNA clone, pCAL-F559, for the calcium-binding protein calcyclin by differential screening of a cDNA library made from RNA isolated from hair follicles of 6-d-old mice.
  • (4) White hair bulbs which demonstrated no TH activity formed 2SCD, but not 5SCD.
  • (5) Isolated outer hair cells from the organ of Corti of the guinea pig have been shown to change length in response to a mechanical stimulus in the form of a tone burst at a fixed frequency of 200 Hz (Canlon et al., 1988).
  • (6) We have reported on a simple and secure method of tying up hair during transplantation surgery for alopecia.
  • (7) Bone age has been analyzed mixed-longitudinally in a subsample of 370 patients (660 observations) and showed a slight retardation at all ages between 6 and 13 yr. Development of pubic hair of 91 subjects analyzed cross-sectionally was definitely retarded when compared to adequate reference data.
  • (8) Tumors were induced in athymic, T-cell-deficient nude mice and in syngeneic normal haired mice by treatment with low doses of 3-methylcholantrene (MCA).
  • (9) As I looked further, I saw that there was blood and hair and what looked like brain tissue intermingled with that to the right area of her skull."
  • (10) A new method of staining the keratin filament matrix allowing a visualization of the filaments in cross section of hair fibres has been developed.
  • (11) However, in subjects with alopecia there was no such difference and the growth rate of all the hairs showed a continuous distribution.
  • (12) No infection threads were found to penetrate either root hairs or the nodule cells.
  • (13) After 7 days, various stages of sensory hair degeneration could be observed.
  • (14) This review of androgenetic alopecia (AA) in women provides a summary of hair physiology and biochemistry, a general discussion of AA, and a brief description of other types of hair loss in women.
  • (15) Subungual hair penetration appears to be much less common.
  • (16) Steep longitudinal and transverse gradients of glycogen are known to exist in the organ of Corti of the guinea pig, with preferential accumulation in the outer hair cells of the apical turns.
  • (17) Of four normal tissues assessed, two (hair follicles and tissues responsible for development of leg contractures) showed no change in radioresponse after treatment with indomethacin, one (hematopoietic tissue) exhibited radioprotection, and one (jejunum) exhibited slight radiosensitization (enhancement factor, 1.12).
  • (18) On the other hand, the total number of missing hair cells, irrespective of location, was a good, general indicator of the hearing capacity in a given ear.
  • (19) The objective was to determine whether the parent axonal impulse train elicited by dual-hair stimulation was due to a temporal combining ("mixing"; Fukami, 1980) of the impulse trains elicited in the parent axons by the same stimulation to each hair alone.
  • (20) In addition to descriptions of variants of the root appearance for hairs removed from follicles in the three classical growth phases, several other commonly occurring root configurations are described and illustrated with photomicrographs.

Wool


Definition:

  • (n.) The soft and curled, or crisped, species of hair which grows on sheep and some other animals, and which in fineness sometimes approaches to fur; -- chiefly applied to the fleecy coat of the sheep, which constitutes a most essential material of clothing in all cold and temperate climates.
  • (n.) Short, thick hair, especially when crisped or curled.
  • (n.) A sort of pubescence, or a clothing of dense, curling hairs on the surface of certain plants.

Example Sentences:

  • (1) Release of 51Cr was apparently a function of immune thymus-derived lymphocytes (T cells) because it was abrogated by prior incubation of spleen cells with anti-thymus antiserum and complement but was undiminished by passage of spleen cells through nylon-wool columns.
  • (2) Populations of lymphocytes were separated using glass and nylon wool.
  • (3) Removal of accessory cells adherent to nylon wool column abolished MAS reactivity, whereas it has little effect on lymphoproliferation induced by phytohaemagglutinin (PHA).
  • (4) Somatic changes included reduced wool growth, delayed osseous development in the limbs (X-ray assessment) a reduced heart weight (39.1%) and an increased pituitary weight (48.1%).
  • (5) [35S]Cyst(e)ine activity was detected in the faeces, but not in plasma or wool.
  • (6) Immunoreactivity was restricted to the periderm and intermediate layers of fetal epidermis at 55 d of gestation, when the first wave of wool follicles are initiated.
  • (7) Data obtained with cells separated by adherence, nylon wool columns, and positive and negative sorting with monoclonal antibodies that define B, monocyte, T helper and T cytotoxic cells show that several different cell types have the ability to produce GH mRNA.
  • (8) A case is presented of a patient who was arrested along several developmental lines and had suffered from a wool fetish.
  • (9) Removal of nylon wool adherent cells or cells with histamine receptors by column chromatography similarly caused reduced production of type II interferon.
  • (10) The activity of uremic spleen cells can be enhanced (restored) by removal of the sub-population of cells adherent to glass wool.
  • (11) All skirted lots of wool evaluated in this study had improved processing characteristics for all processing traits evaluated.
  • (12) The in vitro generation of allospecific CTL by human PBMC was enhanced 4- to 16-fold by sequential plastic and nylon wool adherence, which depleted the PBMC of macrophages and B cells.
  • (13) In parallel experiments, macrophages infected with the mycobacteria were co-cultured with syngeneic in vivo M. kansasii sensitized non-adherent, nylon-wool purified lymph node cells, and lymphoproliferation was measured by [3H]thymidine incorporation.
  • (14) "The Lib Dems are either cosmically ill-informed or seeking to pull the wool over the eyes of many thousands whose jobs depend on a thriving shipyard," he said.
  • (15) In general, IEL of satisfactory yield and of good viability were obtained with EDTA treatment of the gut tissues, followed by rapid passages of the resultant cells through nylon-wool columns and centrifugation on two-step Percoll density gradients (45% and 80%).
  • (16) There was a definite glove and stocking type of hypesthesia to pinprick and cotton wool.
  • (17) Since young nude mice could be rendered as unpermissive as older nude mice by pretreatment with either PNA-agglutinable thymus cells or nylon-wool passed spleen cells, it is suggested that an increased number of precursor T cells in older nude mice might induce this effect.
  • (18) Differences in wool production between ewes weaning one or two lambs were small.
  • (19) The effects of flumethasone on some aspects of wool growth revealed interactions between the routes of administration, the period of dosage and the rate of wool growth in the recipients.
  • (20) Streptococcus pyogenes survives poorly on plain cotton-wool swabs, whereas serum-dipped swabs permit its survival but also allow overgrouth by other bacteria and are likely to contain virus inhibitors.