| Bacillus piliformis | A species causing Tyzzer's disease in animals. (05 Mar 2000) |
|---|---|
| Bacillus polymyxa | A species found in soil, water, milk, faeces, and decaying vegetables; some strains produce the antibiotic polymyxin. (05 Mar 2000) |
| bacillus popilliae | <bacteria> Bacillus popilliae is a Gram-positive bacterium which attacks only the Japanese beetle (Popillia japonica) and is therefore used to kill the beetles. When the larvae are infected, they turn white because of all the bacterial spores (endospores) that develop in the insects' haemolymph (blood equivalent). (09 Oct 1997) |
| Bacillus pumilus ribonuclease | <enzyme> The extracellular ribonuclease of b. Pumilus kmm62; shares 98% structural identity with binase, 72% with barnase; genbank u06867 Registry number: EC 3.1.4.- Synonym: bacillus pumilus rnase, rnase bp (26 Jun 1999) |
| Bacillus sphaericus | A species that is an insect pathogen and that has been associated with human and other mammalian infections, especially in compromised hosts. (05 Mar 2000) |
| bacillus stearothermophilus | A species of gram-positive bacteria found in soil, hot springs, arctic waters, ocean sediments, and spoiled food products. (12 Dec 1998) |
| bacillus subtilis | <bacteria> Bacillus subtilis is a Gram-positive, rod-shaped, nonpathogenic bacterium which lives in soil. Its genome has been widely studied and is frequently used in genetic engineering and microbiology experiments. (09 Oct 1997) |
| Bacillus thuringiensis | <bacteria> Soil living bacterium that produces an endotoxin that is deadly to insects. Many strains exist, each with great specificity as to target Orders of insects. In general, the mode of action involves solubilisation at the high pH within the target insect's gut, followed by proteolytic cleavage, the activated peptides form pores in the gut cell apical plasma membranes, causing lysis of the cells. (18 Nov 1997) |
| bacilysin synthetase | <enzyme> Catalyses the synthesis of bacilysin from alanine and anticapsin Registry number: EC 6.3.2.- (26 Jun 1999) |
| bacitracin | <protein> Branched cyclic peptides produced by strains of Bacillus licheniformis. Interfere with murein (peptidoglycan) synthesis in gram-positive bacteria. (18 Nov 1997) |
| bacitracin synthetase | <enzyme> Amino acids are activated through formation of aminoacyladenylates and then transferred to thioester sites before polymerization on the enzyme Registry number: EC 6.3.2.- (26 Jun 1999) |
| back | 1. Being at the back or in the rear; distant; remote; as, the back door; back settlements. 2. Being in arrear; overdue; as, back rent. 3. Moving or operating backward; as, back action. Back charges, charges brought forward after an account has been made up. Back filling, the retrograde movement of a man or body of men, without changing front. Back stream, a current running against the main current of a stream; an eddy. To take the back track, to retrace one's steps; to retreat. 1. In human beings, the hinder part of the body, extending from the neck to the end of the spine; in other animals, that part of the body which corresponds most nearly to such part of a human being; as, the back of a horse, fish, or lobster. 2. An extended upper part, as of a mountain or ridge. "[The mountains] their broad bare backs upheave Into the clouds." (Milton) 3. The outward or upper part of a thing, as opposed to the inner or lower part; as, the back of the hand, the back of the foot, the back of a hand rail. "Methought Love pitying me, when he saw this, Gave me your hands, the backs and palms to kiss." (Donne) 4. The part opposed to the front; the hinder or rear part of a thing; as, the back of a book; the back of an army; the back of a chimney. 5. The part opposite to, or most remote from, that which fronts the speaker or actor; or the part out of sight, or not generally seen; as, the back of an island, of a hill, or of a village. 6. The part of a cutting tool on the opposite side from its edge; as, the back of a knife, or of a saw. 7. A support or resource in reserve. "This project Should have a back or second, that might hold, if this should blast in proof." (Shak) 8. The keel and keelson of a ship. 9. <chemical> The upper part of a lode, or the roof of a horizontal underground passage. 10. A garment for the back; hence, clothing. "A bak to walken inne by daylight." (Chaucer) Behind one's back, when one is absent; without one's knowledge; as, to ridicule a person behind his back. Full back, Half back, Quarter back, players stationed behind those in the front line. To be or lie on one's back, to be helpless. To put, or get, one's back up, to assume an attitude of obstinate resistance (from the action of a cat when attacked). To see the back of, to get rid of. To turn the back, to go away; to flee. To turn the back on one, to forsake or neglect him. Origin: As baec, bac; akin to Icel, Sw, & LG. Bak, Dan. Bag; cf. OHG. Bahho ham, Skr. Bhaj to turn, OSlav. Bg flight. Cf. Bacon. Source: Websters Dictionary (01 Mar 1998) |
| back aperture | <microscopy> The exit pupil of a microscope objective lens. The objective lens back aperture, which can be examined with a phase telescope or by inserting a Bertrand lens, displays the conoscopic interference figure and diffraction patterns. (05 Aug 1998) |
| back cross | <genetics> A crossing of a heterozygous organism and one of its homozygous parents. (09 Oct 1997) |
| back focal length | <microscopy> As measured on the principal axis, from the second lens vertex to the back focal point of the lens. It is not the equivalent of the focal length. (05 Aug 1998) |