What's the difference between opaline and oxaline?

Opaline

Definition:

(a.) Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal.

Example Sentences:

(1) Ink and opaline are ejected by a series of coordinated pumping movements of the mantle, gill, and parapodia that closely resemble triggered 'respiratory pumping' or 'Interneuron II' episodes (Kupfermann and Kandel 1969; Byrne and Koester 1978; Hening 1982).
(2) Opaline silica deposits are formed by many vascular (higher) plants.
(3) Pastel mink were intermediate to the opalines, and dark mink indicative of strain differences in the genetic control of gonadal histamine synthesis and inactivation.
(4) Ink and opaline ejections are directed to the front or back of the animal by characteristic responses of the siphon, mantle, and parapodia.
(5) During the years 1970, 1971 and 1972, the irregular antibodies were systematically screened in Toulouse on all blood donors with a manual technique on opaline plate using enzyme treated red cell tests (papain).
(6) Testicular histamine content was higher in December (the time of sexual quiescence) that in March (breeding time) in opaline mink.
(7) The defensive secretions, ink and opaline, are directed along the anterior-posterior axis at the source of noxious stimulation.

Definition:

Example Sentences:

(1) It was shown that the frequency of the one-stage mutants resistant to oxalinic acid, pefloxacin and ciprofloxacin amounted to 10(-9)-10(-11) and was 2 to 3 orders of magnitude lower than that of the mutants resistant to nalidixic acid.