As a noun reaction

is .

As an adjective crossreactive is

describing a reaction between an antigen and an antibody that was formed to counteract a different (often similar) antigen.

As a noun antigen

is antigen.

As an adjective crossreactive is

describing a reaction between an antigen and an antibody that was formed to counteract a different (often similar) antigen.

As adjectives the difference between cardiovascular and cardio

is that cardiovascular is relating to the circulatory system, that is the heart and blood vessels while cardio is cardiovascular; pertaining to the health of the circulatory and respiratory systems.

As a noun cardio is

cardiovascular exercise.

As adjectives the difference between circulatory and cardio

is that circulatory is of or pertaining to a circulation, especially to the circulatory system while cardio is cardiovascular; pertaining to the health of the circulatory and respiratory systems.

As nouns the difference between circulatory and cardio

is that circulatory is (chemistry) a vessel with two portions unequally exposed to heat, and with connecting pipes or passages, through which the fluid rises from the overheated portion, and descends from the relatively colder, maintaining a circulation while cardio is (exercise) cardiovascular exercise.

As adjectives the difference between respiratory and cardio

is that respiratory is relating to respiration; breathing while cardio is cardiovascular; pertaining to the health of the circulatory and respiratory systems.

As a noun cardio is

(exercise) cardiovascular exercise.

As nouns the difference between exercise and cardio

is that exercise is any activity designed to develop or hone a skill or ability while cardio is (exercise) cardiovascular exercise.

As a verb exercise

is to exert for the sake of training or improvement; to practice in order to develop.

As an adjective cardio is

cardiovascular; pertaining to the health of the circulatory and respiratory systems.

As nouns the difference between archaebacterium and crenarchaeon

is that archaebacterium is any primitive bacteria-like organism in the kingdom archaea while crenarchaeon is any archaebacterium of the phylum crenarchaeota .

Leukocidin is a hypernym of exotoxin.

As nouns the difference between exotoxin and leukocidin

is that exotoxin is any toxin secreted by a microorganism into the surrounding environment while leukocidin is a type of cytotoxin created by some types of bacteria.

As a verb enzyme

is .

As a noun myrosin is

an enzyme found in mustard plants, which hydrolyzes sinigrin.

As nouns the difference between mustard and myrosin

is that mustard is a plant of certain species of the genus brassica'', or of related genera (especially ''sinapis alba , in the family brassicaceae, with yellow flowers, and linear seed pods while myrosin is an enzyme found in mustard plants, which hydrolyzes sinigrin.

As an adjective mustard

is of a dark yellow colour.