Is TUNA CROISSANT vegan?

tuna salad (tuna [yellow fin tuna, water, salt], mayonnaise [soybean oil, water, whole eggs and egg yolks, vinegar, salt, sugar, lemon juice {from concentrate}, oleoresin paprika, natural flavors, calcium disodium edta {used to protect quality)], celery, seasoning [maltodextrin, cultured dextrose, sodium diacetate, salt, sodium chloride, egg white lysozyme, nisin preparation], dehydrated onion, soybean oil, garlic salt [salt, dehydrated garlic, silicone dioxide {prevents caking}], salt, xanthan and guar gum [standardized with dextrose], sodium benzoate and potassium sorbate [preservatives]), croissant (wheat flour [wheat flour, malted barley flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid, ascorbic acid], water, roll in margarine [palm and palm kernel oil, soybean oil, water, salt, vegetable mono and diglycerides, polyglycerol ester, soy lecithin, natural and artificial flavors, beta carotene, vitamin ""a"" palmitate], fresh milk, sugar, yeast, liquid whole eggs, salt, dough conditioner [vital wheat gluten, ascorbic acid, enzymes]), tomato, green leaf lettuce.

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