Strain

cepa

(race, lineage, pedigree)

cepa

(particular variety of microbe, organism etc.)

clase

(kind or sort (of person etc.))

linaje

(race, lineage, pedigree)

raza

(race, lineage, pedigree)

tensión

(act of straining, or the state of being strained)

tipo

(kind or sort (of person etc.))

tirón

(violent effort, excessive and hurtful exertion or tension, as of the muscles)

tirón

(injury resulting from violent effort)

trazas

(hereditary character, quality, or disposition)

variedad

(particular variety of microbe, organism etc.)

colar

(to separate solid from liquid)

esforzar

(to apply a force)

tamizar

(to separate solid from liquid)